The length returns the number of characters that are in a string, using
an integer.
<script type="text/javascript">
var testString = "11111";
var length = testString.length;
document.write("The string length is: " + length);
</script>
output:-
The string length is: 5
an integer.
<script type="text/javascript">
var testString = "11111";
var length = testString.length;
document.write("The string length is: " + length);
</script>
output:-
The string length is: 5