<html>
<head>
<meta charset="UTF-8" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
<div id="app"></div>
<script type="text/babel">
const App = () => {
const str = " ";
let message;
if (!str || str.trim() === "") {
message = "String is empty";
} else {
message = "String has some Value ";
}
return (
<div className='container'>
<h1>React Js Check String is empty</h1>
<h3>{message}</h3>
</div>
);
};
ReactDOM.render(<App />, document.getElementById("app"));
</script>
<style>
.container {
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);
width: 600px;
margin: 0 auto;
padding: 20px;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
}
</style>
</body>
</html>