<html>
<head>
<meta charset="UTF-8" />
<script src="https://unpkg.com/react@17.0.2/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@17.0.2/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/@babel/standalone@7.14.7/babel.min.js"></script>
</head>
<body>
<div id="app"></div>
<script type="text/babel">
function App() {
const { useRef, useEffect } = React;
const inputRef = useRef(null);
useEffect(() => {
inputRef.current.focus();
}, []);
return (
<div className='container'>
<h3>React Js set focus on input field after Rendering</h3>
<input ref={inputRef} type="text" />
</div>
);
}
ReactDOM.render(<App />, document.getElementById("app"));
</script>
<style>
.container {
margin: 0 auto;
width: 500px;
text-align: center;
box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.12), 0 2px 4px 0 rgba(0, 0, 0, 0.24);
padding: 20px;
}
.container h3 {
font-size: 20px;
margin-bottom: 10px;
}
.container input {
padding: 10px;
border: 1px solid #ccc;
border-radius: 5px;
font-size: 16px;
width: 300px;
outline: none;
}
.container input:focus {
border-color: #007bff;
}
</style>
</body>
</html>