Question

how can i add a class to some images based on the alt text using jquery?

here is an example of the image:

<img border="0" src="images/Product/icon/26086_1_.jpg" 
alt="Show Picture 1" onclick="setcolorpicidx_26086(1);" 
style="cursor:hand;cursor:pointer;">

so if the alt text contains “Show Picture” then add a class of image-nav

Answer 1

You could also use a filter :

$('img').filter(function() {
    return $(this).prop('alt').indexOf('Show Picture')!=-1;
}).addClass('image-nav');