"use strict"; const {Fragment: _Fragment, jsx: _jsx, jsxs: _jsxs} = arguments[0]; const {useMDXComponents: _provideComponents} = arguments[0]; function _createMdxContent(props) { const _components = { code: "code", h1: "h1", h2: "h2", h3: "h3", hr: "hr", li: "li", p: "p", pre: "pre", span: "span", strong: "strong", ul: "ul", ..._provideComponents(), ...props.components }; return _jsxs(_Fragment, { children: [_jsx(_components.h1, { children: "Instructions: Event Object and preventDefault" }), "\n", _jsx(_components.p, { children: "Follow these step-by-step instructions to build your first React component that uses the event object and preventDefault() to create a professional contact form with custom submission handling. This exercise will reinforce the event handling concepts you learned in the lesson and guide you through creating a form that demonstrates real-world React development patterns." }), "\n", _jsx(_components.h2, { children: "Concept Reinforcement" }), "\n", _jsx(_components.p, { children: "Before we start coding, let's review the key React concepts you'll be applying in this exercise:" }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Event Object Mastery" }), ": You'll use the event object to access form data through event.target properties, demonstrating how React provides detailed information about user interactions. This shows how the event object serves as your window into user actions."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "preventDefault() Control" }), ": You'll use preventDefault() to override the browser's default form submission behavior, taking complete control of how form data is processed. This demonstrates how React applications provide custom user experiences instead of relying on browser defaults."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Form Data Extraction" }), ": You'll extract values from form fields using event.target.value and event.target.name, showing how the event object provides access to all the information you need about user input."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Custom Form Processing" }), ": You'll implement client-side form validation and custom success handling, demonstrating how preventDefault() enables sophisticated form processing that provides immediate user feedback."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Professional Event Handling" }), ": You'll structure event handlers following React best practices, with clear separation between form submission logic and presentation, showing how professional React applications handle user interactions."] }), "\n", _jsx(_components.h2, { children: "The Challenge" }), "\n", _jsx(_components.p, { children: "Create a professional contact form that demonstrates event object usage and preventDefault() fundamentals:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "A complete contact form with name, email, and message fields" }), "\n", _jsx(_components.li, { children: "Custom form submission handling that prevents browser default behavior" }), "\n", _jsx(_components.li, { children: "Real-time form validation with immediate user feedback" }), "\n", _jsx(_components.li, { children: "Success message display after successful form submission" }), "\n", _jsx(_components.li, { children: "Form reset functionality after successful submission" }), "\n", _jsx(_components.li, { children: "Professional styling with smooth transitions and user feedback" }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Success Criteria:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "✅ Contact form prevents default browser submission using preventDefault()" }), "\n", _jsx(_components.li, { children: "✅ Form data is extracted using event object properties (event.target.value, event.target.name)" }), "\n", _jsx(_components.li, { children: "✅ Client-side validation provides immediate feedback for empty fields" }), "\n", _jsx(_components.li, { children: "✅ Success message displays after successful form submission" }), "\n", _jsx(_components.li, { children: "✅ Form resets to empty state after successful submission" }), "\n", _jsx(_components.li, { children: "✅ Component uses proper React patterns with controlled components" }), "\n", _jsx(_components.li, { children: "✅ Event handlers are organized professionally with descriptive names" }), "\n", _jsx(_components.li, { children: "✅ Components are structured in separate files with proper imports/exports" }), "\n", _jsx(_components.li, { children: "✅ All interactions provide immediate visual feedback" }), "\n"] }), "\n", _jsx(_components.h2, { children: "Independent Learning Opportunity" }), "\n", _jsx(_components.p, { children: "Before looking at the step-by-step guide below, try building this contact form yourself! Use these React concepts you've learned:" }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "React Concepts to Use:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "Functional components with JSX structure and form elements" }), "\n", _jsx(_components.li, { children: "useState hook for managing form data and submission state" }), "\n", _jsx(_components.li, { children: "onSubmit event handler for form submission with preventDefault()" }), "\n", _jsx(_components.li, { children: "onChange event handlers for form field updates using event.target" }), "\n", _jsx(_components.li, { children: "Controlled components pattern with value and onChange props" }), "\n", _jsx(_components.li, { children: "Component import/export with ES6 modules" }), "\n", _jsx(_components.li, { children: "Conditional rendering for success messages and validation feedback" }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Conceptual Hints:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsx(_components.li, { children: "Think about what data needs to change over time (form field values, submission status, success state)" }), "\n", _jsx(_components.li, { children: "Consider what actions users can take (typing in fields, submitting form - those need event handlers)" }), "\n", _jsx(_components.li, { children: "Remember that preventDefault() stops the browser from submitting the form traditionally" }), "\n", _jsx(_components.li, { children: "Use event.target.name and event.target.value to extract form data efficiently" }), "\n", _jsx(_components.li, { children: "React re-renders automatically when state changes, updating the success message display" }), "\n", _jsx(_components.li, { children: "Controlled components keep form data in React state, not DOM state" }), "\n"] }), "\n", _jsx(_components.p, { children: "Try building it yourself first - it's okay if you get stuck! The step-by-step guide below will help you understand each React concept as you implement it." }), "\n", _jsx(_components.hr, {}), "\n", _jsx(_components.h2, { children: "Step-by-Step React Implementation Guide" }), "\n", _jsx(_components.p, { children: "If you need help or want to understand each React concept in detail, follow these steps:" }), "\n", _jsx(_components.h3, { children: "Step 1: Create the ContactForm Component File" }), "\n", _jsxs(_components.p, { children: ["Create a new file called ", _jsx(_components.code, { children: "ContactForm.js" }), " and set up the basic React component structure with form elements. This demonstrates React's component-based architecture and professional form structure."] }), "\n", _jsx(_components.pre, { className: "language-jsx", children: _jsxs(_components.code, { className: "language-jsx code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsx(_components.span, { className: "token imports", children: _jsx(_components.span, { className: "token maybe-class-name", children: "React" }) }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'react'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "2", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "3", children: 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React component using modern patterns"] }), "\n", _jsx(_components.li, { children: "The JSX return statement describes a complete form structure with proper semantic HTML" }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "htmlFor" }), " attributes connect labels to inputs for accessibility (React uses htmlFor instead of for)"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "name" }), " attributes on form elements will be crucial for extracting data from the event object"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "export default ContactForm" }), " makes this component available for import in other files"] }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates React component structure and semantic HTML form creation. The form elements are set up to work with React's event handling system."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your basic contact form render! Notice how the CSS styling creates a professional appearance even before adding React functionality."] }), "\n", _jsx(_components.h3, { children: "Step 2: Add State for Form Data Management" }), "\n", _jsx(_components.p, { children: "Import the useState hook and add state to manage form data and submission status. 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{ className: "token punctuation", children: "\"" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "55", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "label"] }), " ", _jsx(_components.span, { className: "token attr-name", children: "htmlFor" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "message", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "Message:" }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "56", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "textarea"] }), "\n"] })] }), _jsx(_components.span, { className: "code-line line-number", line: "57", children: _jsxs(_components.span, { className: "token tag", children: [" ", _jsx(_components.span, { className: "token attr-name", children: "id" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "message", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), "\n"] }) }), _jsx(_components.span, { className: "code-line line-number", line: "58", children: _jsxs(_components.span, { className: "token tag", children: [" ", _jsx(_components.span, { className: "token attr-name", children: "name" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "message", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), "\n"] }) }), _jsx(_components.span, { className: "code-line 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children: [_jsx(_components.span, { className: "token script-punctuation punctuation", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "handleInputChange", _jsx(_components.span, { className: "token punctuation", children: "}" })] }), "\n"] }) }), _jsx(_components.span, { className: "code-line line-number", line: "61", children: _jsxs(_components.span, { className: "token tag", children: [" ", _jsx(_components.span, { className: "token attr-name", children: "placeholder" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "Enter your message", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), "\n"] }) }), _jsx(_components.span, { className: "code-line line-number", line: "62", children: _jsxs(_components.span, { className: "token tag", children: [" ", _jsx(_components.span, { className: "token attr-name", children: "rows" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "5", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), "\n"] }) }), _jsx(_components.span, { className: "code-line line-number", line: "63", children: _jsxs(_components.span, { className: "token tag", children: [" ", _jsx(_components.span, { className: "token attr-name", children: "required" }), "\n"] }) }), _jsxs(_components.span, { className: "code-line line-number", line: "64", children: [_jsxs(_components.span, { className: "token tag", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "/>" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "65", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "66", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "button"] }), " ", _jsx(_components.span, { className: "token attr-name", children: "type" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "submit", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), " ", _jsx(_components.span, { className: "token attr-name", children: "className" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "submit-button", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsx(_components.span, { className: "code-line line-number", line: "67", children: _jsx(_components.span, { className: "token plain-text", children: " Send Message\n" }) }), _jsxs(_components.span, { className: "code-line line-number", line: "68", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "69", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "70", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "71", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "72", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "73", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "74", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "75", children: [_jsx(_components.span, { className: "token keyword module", children: "export" }), " ", _jsx(_components.span, { className: "token keyword module", children: "default" }), " ", _jsx(_components.span, { className: "token maybe-class-name", children: "ContactForm" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] })] }) }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Why we write this React code:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "const handleInputChange = (event) => { ... }" }), " creates an event handler that receives the event object"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "const { name, value } = event.target" }), " uses destructuring to extract the name and value from the event target"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "event.target" }), " refers to the specific form field that triggered the change event"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "[name]: value" }), " uses computed property names to update the correct field in state"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "...prevData" }), " spreads the previous state to maintain other field values"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "onChange={handleInputChange}" }), " connects each form field to the same change handler"] }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates how to use the event object to extract form data and update state. One event handler manages all form fields by using event.target properties."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " and try typing in the form fields! You can now type in all fields because the event handlers extract the values from the event object and update React state."] }), "\n", _jsx(_components.h3, { children: "Step 4: Add Form Submission Handler with preventDefault()" }), "\n", _jsx(_components.p, { children: "Add an onSubmit event handler that uses preventDefault() to override browser default behavior and implement custom form processing." }), "\n", _jsx(_components.pre, { className: "language-jsx", children: _jsxs(_components.code, { className: "language-jsx code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsxs(_components.span, { className: "token imports", children: [_jsx(_components.span, { className: "token maybe-class-name", children: "React" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), " useState ", _jsx(_components.span, { className: "token punctuation", children: "}" })] }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'react'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "2", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "3", children: [_jsx(_components.span, { className: "token keyword", children: "function" }), " ", _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "ContactForm" }) }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "4", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "formData", _jsx(_components.span, { className: "token punctuation", children: "," }), " setFormData", _jsx(_components.span, { className: "token punctuation", children: "]" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token function", children: "useState" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "5", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "name" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "''" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "6", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "email" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "''" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "7", children: [" ", _jsx(_components.span, { className: "token literal-property property", children: "message" }), _jsx(_components.span, { className: "token operator", children: ":" }), " ", _jsx(_components.span, { className: "token string", children: "''" }), _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "8", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "9", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "10", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "isSubmitted", _jsx(_components.span, { className: "token punctuation", children: "," }), " setIsSubmitted", _jsx(_components.span, { className: "token punctuation", children: "]" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token function", children: "useState" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token boolean", children: "false" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "11", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "12", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token function-variable function", children: "handleInputChange" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token parameter", children: "event" }), " ", _jsx(_components.span, { className: "token arrow operator", children: "=>" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "13", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), " name", _jsx(_components.span, { className: "token punctuation", children: "," }), " value ", _jsx(_components.span, { className: "token punctuation", children: "}" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " event", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "target" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "14", children: [" ", _jsx(_components.span, { className: "token function", children: "setFormData" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token parameter", children: "prevData" }), " ", _jsx(_components.span, { className: "token arrow operator", children: "=>" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "15", children: [" ", _jsx(_components.span, { className: "token spread operator", children: "..." }), "prevData", _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "16", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "[" }), "name", _jsx(_components.span, { className: "token punctuation", children: "]" }), _jsx(_components.span, { className: "token operator", children: ":" }), " value", _jsx(_components.span, { className: "token punctuation", children: "," }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "17", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "18", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "19", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "20", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token function-variable function", children: "handleSubmit" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token parameter", children: "event" }), " ", _jsx(_components.span, { className: "token arrow operator", children: "=>" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "21", children: [" event", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "preventDefault" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "22", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "23", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Validate form data" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "24", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token operator", children: "!" }), "formData", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "name" }), " ", _jsx(_components.span, { className: "token operator", children: "||" }), " ", _jsx(_components.span, { className: "token operator", children: "!" }), "formData", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { 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using the current formData state" }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "console.log('Form submitted with data:', formData)" }), " logs the form data for debugging"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "setIsSubmitted(true)" }), " updates state to show the success message"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "setTimeout()" }), " creates a delay before resetting the form to demonstrate the success state"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "onSubmit={handleSubmit}" }), " connects the form to the submission handler"] }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates preventDefault() in action, stopping browser default behavior and implementing custom form processing with validation and user feedback."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " and try submitting the form! Fill in all fields and click \"Send Message\" to see the custom submission handling with success message and automatic form reset."] }), "\n", _jsx(_components.h3, { children: "Step 5: Add Enhanced Validation and User Feedback" }), "\n", _jsx(_components.p, { children: "Enhance the form with better validation feedback and improved user experience using more event object properties." }), "\n", _jsx(_components.pre, { className: "language-jsx", children: _jsxs(_components.code, { className: "language-jsx code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsxs(_components.span, { className: "token imports", children: [_jsx(_components.span, { className: "token maybe-class-name", children: "React" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " ", _jsx(_components.span, { className: "token punctuation", 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className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "26", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "27", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "28", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "29", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token function-variable function", children: "validateForm" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" 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children: "'Email is required'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "38", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), " ", _jsx(_components.span, { className: "token keyword control-flow", children: "else" }), " ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token operator", children: "!" }), _jsxs(_components.span, { className: "token regex", children: [_jsx(_components.span, { className: "token regex-delimiter", children: "/" }), _jsxs(_components.span, { className: "token regex-source language-regex", children: [_jsx(_components.span, { className: "token char-set class-name", children: "\\S" }), _jsx(_components.span, { className: "token quantifier number", 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className: "code-line line-number", line: "42", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token operator", children: "!" }), "formData", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "message" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "trim" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: 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_jsx(_components.span, { className: "token property-access", children: "message" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "trim" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "length" }), " ", _jsx(_components.span, { className: "token operator", children: "<" }), " ", _jsx(_components.span, { className: "token number", children: "10" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "45", children: [" newErrors", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "message" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token string", children: "'Message must be at least 10 characters'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "46", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "47", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "48", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "return" }), " newErrors", _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "49", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "50", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "51", children: [" ", _jsx(_components.span, { className: "token keyword", children: "const" }), " ", _jsx(_components.span, { className: "token function-variable function", children: "handleSubmit" }), " ", _jsx(_components.span, { className: "token operator", children: "=" }), " ", _jsx(_components.span, { className: "token parameter", children: "event" }), " ", _jsx(_components.span, { className: "token arrow operator", children: "=>" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line 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className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "55", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "56", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "if" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token known-class-name class-name", children: "Object" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "keys" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "formErrors", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "length" }), " ", _jsx(_components.span, { className: "token operator", children: ">" }), " ", _jsx(_components.span, { className: "token number", children: "0" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "57", children: [" ", _jsx(_components.span, { className: "token function", children: "setErrors" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), "formErrors", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "58", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "return" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "59", children: [" ", _jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "60", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "61", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Clear any existing errors" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "62", children: [" ", _jsx(_components.span, { className: "token function", children: "setErrors" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: "{" }), _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token 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}), " formData", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "66", children: [" ", _jsx(_components.span, { className: "token console class-name", children: "console" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "log" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token string", children: "'Event type:'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " event", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "type" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "67", children: [" ", _jsx(_components.span, { className: "token console class-name", children: "console" }), _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token method function property-access", children: "log" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token string", children: "'Form element:'" }), _jsx(_components.span, { className: "token punctuation", children: "," }), " event", _jsx(_components.span, { className: "token punctuation", children: "." }), _jsx(_components.span, { className: "token property-access", children: "target" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "68", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "69", children: [" ", _jsx(_components.span, { className: "token comment", children: "// Show success message" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "70", children: [" ", _jsx(_components.span, { className: "token function", children: "setIsSubmitted" }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token boolean", children: "true" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "71", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "72", children: [" ", _jsx(_components.span, { className: "token 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children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "button"] }), " ", _jsx(_components.span, { className: "token attr-name", children: "type" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "submit", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), " ", _jsx(_components.span, { className: "token attr-name", children: "className" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", 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className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "149", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: "}" }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "150", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "151", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "152", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "153", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "154", children: [_jsx(_components.span, { className: "token keyword module", children: "export" }), " ", _jsx(_components.span, { className: "token keyword module", children: "default" }), " ", _jsx(_components.span, { className: "token maybe-class-name", children: "ContactForm" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] })] }) }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Why we write this React code:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "const [errors, setErrors] = useState({})" }), " creates state for tracking validation errors"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "validateForm()" }), " function checks all form fields and returns an object with any errors"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "Object.keys(formErrors).length > 0" }), " checks if there are any validation errors"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "console.log('Event type:', event.type)" }), " demonstrates accessing event object properties"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "className={errors.name ? 'error' : ''}" }), " conditionally applies error styling"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "{errors.name && {errors.name}}" }), " conditionally renders error messages"] }), "\n", _jsxs(_components.li, { children: ["Error clearing logic in ", _jsx(_components.code, { children: "handleInputChange" }), " provides immediate feedback when users fix errors"] }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates advanced form validation using the event object, conditional rendering for error messages, and professional user feedback patterns."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " and test the enhanced validation! Try submitting an empty form, entering an invalid email, or a message that's too short to see the validation feedback in action."] }), "\n", _jsx(_components.h3, { children: "Step 6: Update the App Component" }), "\n", _jsxs(_components.p, { children: ["Now update your ", _jsx(_components.code, { children: "App.js" }), " file to import and use your new ContactForm component. This demonstrates React's component composition and import/export system."] }), "\n", _jsx(_components.pre, { className: "language-jsx", children: _jsxs(_components.code, { className: "language-jsx code-highlight", children: [_jsxs(_components.span, { className: "code-line line-number", line: "1", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsx(_components.span, { className: "token imports", children: _jsx(_components.span, { className: "token maybe-class-name", children: "React" }) }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'react'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "2", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsx(_components.span, { className: "token imports", children: _jsx(_components.span, { className: "token maybe-class-name", children: "ContactForm" }) }), " ", _jsx(_components.span, { className: "token keyword module", children: "from" }), " ", _jsx(_components.span, { className: "token string", children: "'./ContactForm'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "3", children: [_jsx(_components.span, { className: "token keyword module", children: "import" }), " ", _jsx(_components.span, { className: "token string", children: "'./styles.css'" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "4", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "5", children: [_jsx(_components.span, { className: "token keyword", children: "function" }), " ", _jsx(_components.span, { className: "token function", children: _jsx(_components.span, { className: "token maybe-class-name", children: "App" }) }), _jsx(_components.span, { className: "token punctuation", children: "(" }), _jsx(_components.span, { className: "token punctuation", children: ")" }), " ", _jsx(_components.span, { className: "token punctuation", children: "{" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "6", children: [" ", _jsx(_components.span, { className: "token keyword control-flow", children: "return" }), " ", _jsx(_components.span, { className: "token punctuation", children: "(" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "7", children: [" ", _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), "div"] }), " ", _jsx(_components.span, { className: "token attr-name", children: "className" }), _jsxs(_components.span, { className: "token attr-value", children: [_jsx(_components.span, { className: "token punctuation attr-equals", children: "=" }), _jsx(_components.span, { className: "token punctuation", children: "\"" }), "App", _jsx(_components.span, { className: "token punctuation", children: "\"" })] }), _jsx(_components.span, { className: "token punctuation", children: ">" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "8", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "<" }), _jsx(_components.span, { className: "token class-name", children: "ContactForm" })] }), " ", _jsx(_components.span, { className: "token punctuation", children: "/>" })] }), _jsx(_components.span, { className: "token plain-text", children: "\n" })] }), _jsxs(_components.span, { className: "code-line line-number", line: "9", children: [_jsx(_components.span, { className: "token plain-text", children: " " }), _jsxs(_components.span, { className: "token tag", children: [_jsxs(_components.span, { className: "token tag", children: [_jsx(_components.span, { className: "token punctuation", children: "" })] }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "10", children: [" ", _jsx(_components.span, { className: "token punctuation", children: ")" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] }), _jsxs(_components.span, { className: "code-line line-number", line: "11", children: [_jsx(_components.span, { className: "token punctuation", children: "}" }), "\n"] }), _jsx(_components.span, { className: "code-line line-number", line: "12", children: "\n" }), _jsxs(_components.span, { className: "code-line line-number", line: "13", children: [_jsx(_components.span, { className: "token keyword module", children: "export" }), " ", _jsx(_components.span, { className: "token keyword module", children: "default" }), " ", _jsx(_components.span, { className: "token maybe-class-name", children: "App" }), _jsx(_components.span, { className: "token punctuation", children: ";" }), "\n"] })] }) }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Why we write this React code:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "import ContactForm from './ContactForm'" }), " imports your custom component"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "import './styles.css'" }), " imports the CSS file for styling"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.code, { children: "" }), " uses your component as a JSX element"] }), "\n", _jsx(_components.li, { children: "The App component acts as the root component that renders other components" }), "\n", _jsx(_components.li, { children: "This demonstrates React's component composition pattern" }), "\n"] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "React Concept Applied" }), ": This demonstrates React's component composition - how you build complex applications by combining simpler, focused components. The App component serves as a container for your contact form."] }), "\n", _jsxs(_components.p, { children: [_jsx(_components.strong, { children: "Click \"Run\"" }), " to see your complete React contact form application! The ContactForm component is now rendered inside the App component with full functionality."] }), "\n", _jsx(_components.h2, { children: "Congratulations!" }), "\n", _jsx(_components.p, { children: "You've successfully built your first React component that uses the event object and preventDefault() for professional form handling! You've applied fundamental React concepts that form the foundation of all modern web applications:" }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "React Concepts Mastered:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Event Object Usage" }), ": Used event.target properties to extract form data and understand user interactions"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "preventDefault() Control" }), ": Prevented browser default form submission to implement custom processing"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Form Data Extraction" }), ": Accessed form field values using event.target.name and event.target.value"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Controlled Components" }), ": Managed form state in React rather than letting the browser control it"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Custom Form Processing" }), ": Implemented client-side validation and custom success handling"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Professional Event Handling" }), ": Structured event handlers with clear separation of concerns"] }), "\n", _jsxs(_components.li, { children: ["✅ ", _jsx(_components.strong, { children: "Component Architecture" }), ": Organized code in separate files with proper imports and exports"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Real-World Applications:" }) }), "\n", _jsx(_components.p, { children: "This contact form demonstrates patterns you'll use in every React application:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "User Registration Forms" }), ": Account creation with validation and custom processing"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "E-commerce Checkout" }), ": Order forms with payment processing and validation"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Survey and Feedback Systems" }), ": Data collection with immediate validation feedback"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Content Management" }), ": Admin forms for creating and editing content"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Support Systems" }), ": Help desk forms with custom routing and processing"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "What You've Built:" }) }), "\n", _jsx(_components.p, { children: "Your interactive contact form showcases React's professional form handling capabilities:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Custom Submission" }), ": Form prevents browser default and uses custom JavaScript processing"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Real-Time Validation" }), ": Immediate feedback when users make errors or corrections"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Professional User Experience" }), ": Success messages, error handling, and automatic form reset"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Controlled Components" }), ": All form data managed by React state for predictable behavior"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Event Object Mastery" }), ": Efficient data extraction using event.target properties"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Professional Development Patterns:" }) }), "\n", _jsx(_components.p, { children: "You've learned industry-standard React practices:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Event Object Utilization" }), ": Accessing detailed information about user interactions"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "preventDefault() Usage" }), ": Taking control of browser behavior when needed"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Form State Management" }), ": Professional patterns for handling form data and validation"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Error Handling" }), ": User-friendly validation feedback and error recovery"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Component Organization" }), ": Clean separation between form logic and presentation"] }), "\n"] }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "The Foundation You've Built:" }) }), "\n", _jsx(_components.p, { children: "Every React concept you'll learn builds on these event object and preventDefault() fundamentals:" }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Advanced Form Patterns" }), ": Multi-step forms, file uploads, and complex validation all use these concepts"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "API Integration" }), ": Sending form data to servers builds on the custom processing patterns you've learned"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "User Interface Controls" }), ": Modals, dropdowns, and interactive components all use preventDefault() patterns"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Performance Optimization" }), ": Advanced techniques build on understanding when and why to prevent defaults"] }), "\n"] }), "\n", _jsx(_components.p, { children: "You're now ready to build more sophisticated React forms with file uploads, multi-step workflows, and advanced validation patterns. Every form you'll ever build in React uses the same fundamental concepts you've just mastered!" }), "\n", _jsx(_components.p, { children: "The contact form you've created might seem straightforward, but it contains the DNA of every professional form handling system. When you prevented that form submission and processed the data with custom JavaScript, you used the same React techniques that power the form handling in applications used by millions of people worldwide." }), "\n", _jsx(_components.p, { children: _jsx(_components.strong, { children: "Professional Skills Developed:" }) }), "\n", _jsxs(_components.ul, { children: ["\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Event-Driven Programming" }), ": Understanding how user actions trigger application responses"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Custom User Experiences" }), ": Overriding browser defaults to create tailored interactions"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Data Validation" }), ": Implementing client-side validation for immediate user feedback"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "State Management" }), ": Managing complex form state with multiple fields and validation states"] }), "\n", _jsxs(_components.li, { children: [_jsx(_components.strong, { children: "Error Handling" }), ": Providing clear, actionable feedback when things go wrong"] }), "\n"] }), "\n", _jsx(_components.p, { children: "Welcome to the world of professional React form handling! You're now equipped with the fundamental skills to build sophisticated, user-friendly forms that provide excellent user experiences and handle data processing with precision and grace." }), "\n", _jsx(_components.p, { children: "The event object and preventDefault() concepts you've mastered are the foundation of every interactive web application. From simple contact forms to complex multi-step wizards, these patterns scale to handle any form complexity you can imagine." })] }); } function MDXContent(props = {}) { const {wrapper: MDXLayout} = { ..._provideComponents(), ...props.components }; return MDXLayout ? _jsx(MDXLayout, { ...props, children: _jsx(_createMdxContent, { ...props }) }) : _createMdxContent(props); } return { default: MDXContent };