open_in_new content_copy 
<!DOCTYPE html>
<html>
<body>
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<h2>JavaScript String Properties</h2>
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<p>The length property returns the length of a string:</p>
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<p id="demo"></p>
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<script>
var txt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
var sln = txt.length;
document.getElementById("demo").innerHTML = sln;
</script>
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</body>
</html>
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