What's the best way to check for the presence of a hash?

Right now I'm using

if(window.locatio开发者_开发问答n.hash != '')

Is this foolproof? Or, is there a way to return a Boolean value instead?

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window.location.hash will return empty string if the hash symbol is present in the URL but it doesn't have anything on it's right side. If there's a value it will return the value with the hash symbol as first character. This might be a bit confusing in certain situations.

Part from that I'd say it's a pretty solid way of using it.