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ReactBeginner#jsx
ReactBeginner#fundamentals
What is React and why use it?
A JavaScript library for building UIs from small composable components. It keeps a virtual DOM, diffs it after state changes and patches only what actually changed, so you describe the UI declaratively instead of manipulating the DOM by hand.
Example
function Welcome({ name }) {
return <h1>Hello {name}</h1>;
}
<Welcome name="Anu" />