JSFiddle - React, Tailwind, and code Playground
by Eric Howe
HTML
<script src="http://documentcloud.github.com/underscore/underscore-min.js"></script>
<script src="http://documentcloud.github.com/backbone/backbone-min.js"></script>JavaScript
var M = Backbone.Model.extend({});
var m = new M;
console.log(_(m).has('toJSON'));
console.log(_(m.toJSON).isFunction());