This phenomenon confuses me. There must be some small detail that I am missing here. My goal is to load a simple observableArray in knockout using an ajax call.
javascript
// We initialize the array with an empty array.
var data = [];
var viewModel = {
vendors: ko.observableArray(data)
};
ko.applyBindings(viewModel);
$(function () {
// When this click event occurs, we populate the observable array
$('#load').click(function () {
// WORKS. Html is updated appropriately.
viewModel.vendors([{ "Id": "01" },{ "Id": "02" },{ "Id": "03" }]);
// DOES NOT WORK. Fiddler2 shows the exact same JSON string coming back
// as in the example above, and the success function is being called.
$.ajax({
url: '/vendors/10',
dataType: 'json',
success: function (data) {
viewModel.vendors(data);
}
});
});
});
html
<button id="load">Load</button>
<ul data-bind="template: { foreach: vendors }">
<li><span data-bind="text: Id"></span></li>
</ul>
Question: Why does the successful ajax call, where the value of the data variable perfectly matches the hard-coded value, fail to trigger the HTML refresh?