#408 ✓duplicate
William Warby

Selector Expression Causing Endless Loop - Hangs Browser

Reported by William Warby | October 26th, 2008 @ 10:15 AM | in 1.6.1

I haven't investigated exactly why, but the following expression hangs Firefox (and presumably other browsers):

$$('.picture-news-tabs li:not(.selected) a|h2')

Prototype gets suck in the gsub method in an endless loop whilst evaluating this expression until you eventually get the unresponsive script warning. There's almost certainly something wrong with my CSS expression here (it's the first time I've used CSS3 selectors) but no amount of badly written selectors should cause a browser crash right?

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