title: Avoid Showing Kendo Tooltip
body: <p>Here is my tooltip definition:</p>
  
  <pre><code>var toolTip = $('.static_grid_wrapper').kendoTooltip({
      filter: "tr[role=row]",
      position: "top",
      content: function (e) {
          var target = e.target; 
          var tooltipMessage = "&lt;table&gt;";
  
          var a = $(target).data("A");
          if (defined(alpari)) {
              tooltipMessage += "&lt;tr&gt;&lt;td&gt;A&lt;/td&gt;&lt;td&gt;" + a + "&lt;/td&gt;&lt;/tr&gt;";
          }
          else {
              tooltipMessage += "&lt;tr&gt;&lt;td&gt;A&lt;/td&gt;&lt;td&gt;NA&lt;/td&gt;&lt;/tr&gt;";
          }
  
          var l = $(target).data("L");
          if (defined(l)) {
              tooltipMessage += "&lt;tr&gt;&lt;td&gt;L&lt;/td&gt;&lt;td&gt;" + l + "&lt;/td&gt;&lt;/tr&gt;";
          }
          else {
              tooltipMessage += "&lt;tr&gt;&lt;td&gt;L&lt;/td&gt;&lt;td&gt;NA&lt;/td&gt;&lt;/tr&gt;";
          }
  
          var s = $(target).data("S");
          if (defined(s)) {
              tooltipMessage += "&lt;tr&gt;&lt;td&gt;S&lt;/td&gt;&lt;td&gt;" + s + "&lt;/td&gt;&lt;/tr&gt;";
          }
          else {
              tooltipMessage += "&lt;tr&gt;&lt;td&gt;S&lt;/td&gt;&lt;td&gt;NA&lt;/td&gt;&lt;/tr&gt;";
          }
  
          var g = $(target).data("G");
          if (defined(g)) {
              tooltipMessage += "&lt;tr&gt;&lt;td&gt;G&lt;/td&gt;&lt;td&gt;" + g + "&lt;/td&gt;&lt;/tr&gt;";
          }
          else {
              tooltipMessage += "&lt;tr&gt;&lt;td&gt;G&lt;/td&gt;&lt;td&gt;NA&lt;/td&gt;&lt;/tr&gt;";
          }
  
          tooltipMessage += "&lt;/table&gt;";
          return tooltipMessage;
      },
      show: function (e) {
  
      }
  }).data("kendoTooltip");
  </code></pre>
  
  <p>If "a" or "l" or "s" or "g" is undefined, I don't want to show the tooltip. But I couldn't find the method I have to call.</p>