انها محاولة لنفسك - jQuery html_attr

<!DOCTYPE html>
<html>
<head>
<script src="/lib/jquery-1.12.2.min.js"></script>
<script>
$(document).ready(function(){
   $("button").click(function(){
   alert("Image width: " + $("img").attr("width"));
   });
});
</script>
</head>
<body>

<img src="img_pulpitrock.jpg" alt="Pulpit Rock" width="284" height="213"><br>

<button>Return the width of the image</button>

</body>
</html>