I'm just getting started with Javascript and using the Underscore library. I see they have all sorts of utility function, like _.contains. Is there a way to make this work on objects? 

var indexes = [ {'id': 1, 'name': 'jake' }, {'id':4, 'name': 'jenny'},  {'id': 9, 'name': 'nick'}, {'id': 1, 'name': 'jake' }, {'id':4, 'name': 'jenny'} ];

if (_.contains(indexes, {'id':1, 'name': 'jake'})) {
    console.log("contains");
}

Most of the examples they show have simple arrays with strings or numbers in them. I was wondering what I can do to use their utility functions like _.contains for objects. Thanks.

javascript underscore.js
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