Javascript - Length
Advanced scripters will often need to know how long a JavaScript string is. For example, if a web developer was creating a submission form that required the username to be no longer than 20 characters, then she would need to check the length of the string before allowing the user to submit data.
The length property returns the number of characters that are in a string, using an integer. Below is the basic code for accessing this property.
<script type="text/javascript">
var myString = "123456";
var length = myString.length;
document.write("The string is this long: " + length);
// Same thing, but using the property inside the write function
document.write("<br />The string is this long: " + myString.length);
</script>
String Length Display
The string is this long: 6
The string is this long: 6
