Backbone.js Todo Example

by Budhram Gurung

HTML

<script src="https://rawgithub.com/douglascrockford/JSON-js/master/json2.js"></script>
<script src="https://rawgithub.com/jashkenas/underscore/1.5.2/underscore-min.js"></script>
<script src="https://rawgithub.com/jashkenas/backbone/1.0.0/backbone-min.js"></script>
<script src="https://rawgithub.com/jeromegn/Backbone.localStorage/v1.1.6/backbone.localStorage.js"></script>
<div id="app"></div>

CSS

body {
	font-size: 14px;
	background: #eeeeee;
	color: #333333;
	width: 520px;
	margin: 0 auto;
}

#todoapp {
	background: #fff;
	padding: 20px;
	margin-bottom: 40px;
}

#todoapp h1 {
	font-size: 36px;
	text-align: center;
}

#todoapp input[type="text"] {
	width: 466px;
	font-size: 24px;
	line-height: 1.4em;
	padding: 6px;
}

#main {
	display: none;
}

#todo-list {
	margin: 10px 0;
	padding: 0;
	list-style: none;
}

#todo-list li {
	padding: 18px 20px 18px 0;
	position: relative;
	font-size: 24px;
	border-bottom: 1px solid #cccccc;
}

#todo-list li:last-child {
	border-bottom: none;
}
#todo-list li.done label {
    color: #777777;
    text-decoration: line-through;
}

#todo-list li .edit {
    display: none;
}
#todo-list li.editing {
	border-bottom: 1px solid #778899;
}

#todo-list li.editing .view {
	display: none;
}
#todo-list li.editing .edit {
	display: block;
	width: 444px;
	padding: 13px 15px 14px 20px;
	margin: 0;
}

#todo-list li.done label {
	color: #777777;
	text-decoration: line-through;
}

#todo-list .destroy {
	position: absolute;
	right: 5px;
	top: 20px;
	display: none;
	cursor: pointer;
	width: 20px;
	height: 20px;
}

#todoapp footer {
	display: none;
	margin: 0 -20px -20px -20px;
	overflow: hidden;
	color: #555555;
	background: #f4fce8;
	border-top: 1px solid #ededed;
	padding: 0 20px;
	line-height: 37px;
}

#clear-completed {
	float: right;
	line-height: 20px;
	text-decoration: none;
	background: rgba(0, 0, 0, 0.1);
	color: #555555;
	font-size: 11px;
	margin-top: 8px;
	margin-bottom: 8px;
	padding: 0 10px 1px;
	cursor: pointer;
}

JavaScript

$(function(){
    var WorldEvent = Backbone.Model.extend({});
    var WorldEventView = Backbone.View.extend({
        events: {
            'click' : 'focusEvent'
        },
    
        focusEvent: function(){
            alert('great.');
        },
    
        className : 'pin bounce',
    
        render : function () {
            console.log('did something');
            this.$el.html("rendered");
        }
    });
    
    var WorldEventCollection = Backbone.Collection.extend({ 
        model: WorldEvent,
        url: '/events'
    });
    
    var worldEventCollection = new WorldEventCollection();
    
    var worldEventCollectionView = new WorldEventView({
        el: '#app',
        collection: worldEventCollection,
    
        initialize: function(){
            console.log('inside app');
            this.collection.on('add', this.addOne, this);
            this.collection.on('reset', this.addAll, this);
        },
        addOne: function(myEvent){
            var worldEventView = new WorldEventView({ model: myEvent });
            this.$el.append(worldEventView.render().el);
        },
        addAll: function(){
            this.collection.forEach(this.addOne, this);
        },
        render: function(){
            this.addAll();
        }
    });
}());