What is React?
React is a front-end JavaScript library.
React was developed by the Facebook Software Engineer Jordan Walke.
React is also known as React.js or ReactJS.
React is a tool for building UI components.
React is a free, open-source JavaScript library used to build user interfaces (UIs), primarily for single-page web applications.
In simple words:
React helps you create web pages using small, reusable pieces called components.
Examble:
- Navbar
- Search bar
- Form
- Product cord
- Button
- Footer
function Welcome() {
return <h1>Hello, World!</h1>;
}
Why use React?
Reusable components – Write a component once and use it many times.
Fast UI updates – React efficiently updates parts of a page when data changes.
Easy to organize – Large applications can be divided into smaller components.
JavaScript-based – You can use JavaScript logic directly with your UI.
Popular ecosystem – React is widely used for modern web applications.
React vs JavaScript
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