Code:
<!DOCTYPE html>
<html>
<body>
<h2>Program to Find the length of the String </h2>
<p>Length of the String <b>"Welcome to The Tech Platform" </b> is :</p>
<p id="demo"></p>
<script>
var txt = "Welcome to The Tech Platform";
var sln = txt.length;
document.getElementById("demo").innerHTML = sln;
</script>
</body>
</html>Output:
Source: W3School
The Tech Platform
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