<!DOCTYPE html>
<html>
<head>
<script src="/lib/jquery-1.12.2.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
alert("Inner width of div: " + $("div").innerWidth());
});
});
</script>
</head>
<body>
<div style="height:100px;width:300px;padding:10px;margin:3px;border:1px solid blue;background-color:lightblue;"></div><br>
<button>Display the inner width of div</button>
<p>innerWidth() - returns the inner width of an element (includes padding).</p>
</body>
</html>