JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://cloud.github.com/downloads/emberjs/ember.js/ember-latest.min.js"></script>
<script type='text/x-handlebars' data-template-name='item'><span>
    {{#with content}}
        {{name}}
    {{/with}}
    </span></script>

<div id="main"></div>

JavaScript

App = Ember.Application.create({});

App.Item = Ember.View.extend({
    templateName: "item",
    didInsertElement: function() {
        this._super();
        this.$("span").after(this.$("span").offset().top)
    }
});

App.CollectionView = Ember.CollectionView.extend({
    itemViewClass: "App.Item",
    contentBinding: "App.collectionController"
});

App.collectionController = Ember.ArrayController.create({
    content: []
});

var collectionView = App.CollectionView.create();
collectionView.appendTo("#main")
    
App.collectionController.addObject({
    name: "Thing"
});

App.collectionController.addObject({
    name: "Other Thing"
});