Knockout Observable Array

HTML

<script src="http://cloud.github.com/downloads/SteveSanderson/knockout/knockout-1.3.0beta.debug.js"></script>
<button data-bind="click: addItem">Add</button>
<button data-bind="click: removeItem">Remove</button>

<ul data-bind="template: { name: 'listTempl', foreach: list }">
    
</ul>

<script id="listTempl" type="text/html">
    <li data-bind="text: name"></li>
</script>

JavaScript

$(function() {
    var data = [ {name: "Bob"}, {name: "Joe"}, {name: "John"} ];
    
    var viewModel = {
        list: ko.observableArray(data),
        
        addItem: function() {
            this.list.push({ name: "Steve"});   
        },
        
        removeItem: function() {
         this.list.pop();   
        }
    };
    ko.applyBindings(viewModel);
});