How to get Match to return an INT and not an array

I have the following:

    var hashID = location.hash.match(/\d/);

Where location.hash eqs: #/groups/58

I want hashID to equal = 58

Right now it equals an array. How can I get back j开发者_如何转开发ust 58 as an int? THanks

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  var hashID = parseInt(location.hash.match(/\d+/)[0])