jQuery attr src

Answer 1

The reason your code is not working is that jQuery(this) in your alert is actually an anchor, and not an image, and thus, it does not have any src attribute. Since your anchor contains an image, you'll be able to adjust your code to:

jQuery('#tab a').click(function() {
   alert(jQuery(this).find('img').attr('src'));
});

Answer 2

You could simply find the image within the anchor tag you have clicked (i.e. search within the anchor container.)

$('#tab a').click(function()
{
   alert($("img", $(this)).attr("src"));
});