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jakearchibald/gist:2107184

Created March 19, 2012 10:44
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gistfile1.js
document.body.addEventListener('error', function(event) {
if ( event.target.nodeName.toLowerCase() == 'img' ) {
// an image on the page failed to load
}
}, true);
@patik
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patik commented Mar 19, 2012

You might consider testing the tag's name with regular expressions for better performance (see jsperf tests here and here).

if ( /^img$/i.test(event.target.nodeName) ) {

@jakearchibald
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Interesting... but if you're testing enough elements to see a real world difference, you've probably got bigger problems.

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