title: Kendo DropDown Javascript Error
body: <p>with this two Kendo DropDowns I get following Javascript error:</p>
  
  <blockquote>
    <p>Uncaught TypeError: undefined is not a function kendo.all.min.js:11</p>
  </blockquote>
  
  <p>What is wrong?</p>
  
  <p>regards</p>
  
  <pre><code>&lt;div class="form-group"&gt;
      @* ReSharper disable once Html.IdNotResolved *@
      &lt;label for="for-date" class="col-lg-2 col-md-2 col-sm-12 col-xs-12 control-label"&gt;@GlobalResources.ForDate&lt;/label&gt;
      &lt;div class="col-lg-5 col-md-5 col-sm-12 col-xs-12"&gt;
          @(Html.Kendo().DropDownList()
              .Name("for-date")
              .DataTextField("Text")
              .DataValueField("Value")
              .AutoBind(true)
              .DataSource(source =&gt; source.Read(read =&gt; read.Action("GetForDatesResidentTransmissions", "Report")).ServerFiltering(false))
          )
      &lt;/div&gt;
  &lt;/div&gt;
  
  &lt;div class="form-group"&gt;
      @* ReSharper disable once Html.IdNotResolved *@
      &lt;label for="place-types" class="col-lg-2 col-md-2 col-sm-12 col-xs-12 control-label"&gt;@GlobalResources.PlaceType&lt;/label&gt;
      &lt;div class="col-lg-5 col-md-5 col-sm-12 col-xs-12"&gt;
          @(Html.Kendo().MultiSelect()
                .Name("place-types")
                .DataTextField("Text")
                .DataValueField("Value")
                .AutoBind(true)
                .DataSource(source =&gt; source.Read(read =&gt; read.Action("GetPlaceTypes", "Report")).ServerFiltering(false))
                )
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <h1>UPDATE</h1>
  
  <p>In the not minified JS File the error is thrown in this line:</p>
  
  <blockquote>
    <p>Uncaught TypeError: undefined is not a function kendo.all.js:7406</p>
    
    <p>that._pristineData = data.slice(0);</p>
  </blockquote>