Script to automatically create alternative text to each image tag

• This function checks whether each image tag that contains alternative text or not. If it does not exist, then it will add ‘alt’ attribute.
• The value for that attribute will be the name of the image which fetches from the URL of the image.

<script>
		$(document).ready(function() {
		  $('img').each(function(){
			var $img = $(this);
			var filename = $img.attr('src');
			var attr = $(this).attr('alt');
			if (typeof attr == typeof undefined || attr == false) {
				$img.attr('alt', filename.substring((filename.lastIndexOf('/'))+1, filename.lastIndexOf('.')));
			}
		  });
		});
</script>	

Advantages of this method compared with previous methods

• No need of editing each image tag section.
• A single function added to the header will automatically create the alternative text.

Disadvantages of this method compared with previous methods

• The auto-created alternative text name will be the name of the image. So, whatever the image name, the same will be reflected in its alternative text.
• Custom modification for alternative text is not possible.