Define a NodeFilter function to accept only 'img' elements
/* Examples From JavaScript: The Definitive Guide, Fourth Edition
Legal matters: these files were created by David Flanagan, and are Copyright (c) 2001 by David Flanagan. You may use, study, modify, and distribute them for any purpose. Please note that these examples are provided "as-is" and come with no warranty of any kind.
David Flanagan */
// Define a NodeFilter function to accept only <img> elements function imgfilter(n) { if (n.tagName == 'IMG') return NodeFilter.FILTER_ACCEPT; else return NodeFilter.FILTER_SKIP; }
// Create a NodeIterator to find <img> tags var images = document.createNodeIterator(document, // traverse entire document /* only look at Element nodes */ NodeFilter.SHOW_ELEMENT, /* filter out all but <img> */ imgfilter, /* unused in HTML documents */ false);
// Use the iterator to loop through all images and do something with them var image; while((image = images.nextNode()) != null) { image.style.visibility = "hidden"; // Process the image here }