JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.4.2/underscore-min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/backbone.js/0.9.2/backbone-min.js"></script>

JavaScript

var collection = new Backbone.Collection([
    { id: 1, name: "test1" },
    { id: 2, name: "test2" },
    { id: 5, name: "test5" }
]);

console.log(collection.pluck("id"));