Form Handling - React Typing CST Test
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Form Handling — React Code
Demonstrates controlled form inputs and submission handling.
import React, { useState } from 'react';
const FormExample = () => {
const [name, setName] = useState('');
const handleSubmit = e => { e.preventDefault(); alert(`Hello, ${name}`); };
return (
<form onSubmit={handleSubmit}>
<input value={name} onChange={e => setName(e.target.value)} placeholder="Enter name" />
<button type="submit">Submit</button>
</form>
);
};
export default FormExample;React Language Guide
React is a declarative, component-based JavaScript library for building user interfaces, primarily for single-page applications. It allows developers to create reusable UI components and manage application state efficiently.
Primary Use Cases
- ▸Single-page web applications (SPAs)
- ▸Dynamic user interfaces for web apps
- ▸Mobile apps via React Native
- ▸Reusable component libraries
- ▸Interactive dashboards and admin panels
Notable Features
- ▸Component-based architecture
- ▸Virtual DOM for optimized rendering
- ▸JSX syntax for combining HTML and JS
- ▸One-way data binding (props)
- ▸Hooks for state and lifecycle management
Origin & Creator
Developed by Jordan Walke at Facebook in 2013.
Industrial Note
React is specialized for building dynamic, responsive web and mobile UIs, particularly in SPA and complex front-end applications.