title: Kendo ui datasource: Object doesn't support property or method '_observe'
body: <p>I have an ASP.NET MVC 4 page that use Kendo ui autocomplete widget to retrieve some JSON information from the server.</p>
  
  <pre><code>@{
    Layout = null;
  }
  
  &lt;!DOCTYPE html&gt;
  
  &lt;html&gt;
  &lt;head&gt;
    &lt;meta name="viewport" content="width=device-width" /&gt;
    &lt;script src="~/Scripts/kendo/jquery.min.js"&gt;&lt;/script&gt;
    &lt;script src="~/Scripts/kendo/kendo.web.min.js"&gt;&lt;/script&gt;
    &lt;script&gt;
      $(function () {
        var autocompleteDataSource = kendo.data.DataSource({
          type: "odata",
            transport:
              read: {
                type: "POST",
                contentType: "application/json",
                url: "/",
                data: {
                  address: function() {
                    return $("#autocomplete").data("kendoAutoComplete").value();
                  }
                },
                dataType: "json"
              }
            },
            schema: {
              data: function (response) {
                return response.data;
              }
            }
          });
  
          $("#autocomplete").kendoAutoComplete({
            minLength: 2,
            dataSource: autocompleteDataSource,
            change: function () {
              this.dataSource.read();
            }
          });
      });
  &lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt;
    &lt;div&gt;
      &lt;input type="text" id="autocomplete" /&gt;
    &lt;/div&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>But when I execute this code, I get this error in kendo.web.min.js on initializing using internet explorer:</p>
  
  <pre><code>JavaScript runtime error: Object doesn't support property or method '_observe'
  </code></pre>
  
  <p>I think obviously that the problem is not in the server page because it have neither tryed to connect to the server when I got this error.
  Thank you all.</p>