title: EasyUI datagrid sends an unwanted request
body: <p>I have a datagrid (table) that when created, it sends two requests: </p>
  
  <ol>
  <li>the first is an unwanted (not send by me)  it has no parameters (only <em>rows</em> and <em>pagination</em> when pagination settings is active), it does go the the intended URL.</li>
  <li>the second is what I programmed (it works fine, with the parameters I send).</li>
  </ol>
  
  <p><strong>So the question is, what fires that  request ?</strong></p>
  
  <ul>
  <li>Note 1: I even add <code>onBeforeLoad:function(){return false;}</code> and still sends the unwanted request.</li>
  <li>Note 2: The requests headers are the same, except for the Content-Length.  (of course).</li>
  <li>Note 3: Related question here: <a href="http://www.jeasyui.com/forum/index.php?topic=560.0" rel="nofollow">http://www.jeasyui.com/forum/index.php?topic=560.0</a> (I already check it)</li>
  <li>Note 4: The version is: v1.10.4</li>
  </ul>
  
  <hr>
  
  <h2><strong>Here is the code:</strong></h2>
  
  <p><strong>HTML</strong></p>
  
  <pre><code>&lt;table
      id="data-grid" 
      class="easyui-datagrid"
      style="width:690px; height:660px"
      url=""
      title=""
      rownumbers="false"
      pagination="false"  
      singleSelect="true"
      pageList="[10,20,30,1000]"
      pageSize="1000"
      &gt;
      &lt;thead&gt;
          &lt;tr&gt;
          &lt;/tr&gt;
      &lt;/thead&gt;
  &lt;/table&gt;
  </code></pre>
  
  <p><strong>JavaScript</strong></p>
  
  <pre><code>$('#data-grid').datagrid({
      //Lets add the parameters
      queryParams: {
          status_a:   a),
          status_b:   b,
      },
      url: '/path/path',
      columns:[[.....]],
  
  });
  </code></pre>