<html>
<head> </head>
<body>
<div id="app">
<h1>Javascript Check String is Empty or not</h1>
<button onclick="checkString()">Check String</button>
<p id="output"></p>
</div>
<script>
const string = ' ';
function isEmpty(str) {
return !str || str.trim().length === 0;
}
function checkString() {
var result = isEmpty(string);
if (result) {
document.getElementById("output").innerHTML = "String is Empty";
} else {
document.getElementById("output").innerHTML = "Sting has some Value";
}
}
</script>
</body>
</html>