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Show a Tooltip Only If the Text Overflows with an Ellipsis

Environment

Product Progress Kendo UI Tooltip for jQuery
Operating System Windows 10 64bit
Visual Studio version Visual Studio 2017
Preferred Language JavaScript

Description

How can I show a Kendo UI Tooltip only if the text of the target overflows with an ellipsis?

Solution

The following example demonstrates how to achieve the desired scenario.

    <style>
      td{
        max-width: 200px;
        white-space: nowrap;
        text-overflow: ellipsis;
        overflow: hidden;
      }

      [role="tooltip"]{
        visibility: hidden;
      }
    </style>
    <div id="example">
      <table>
        <tr>
          <td>short text</td>
        </tr>
        <tr>
          <td>veryverylongtextthatdoesnotfitinthecontainer</td>
        </tr>
      </table>
    </div>
    <script>
      $("#example").kendoTooltip({
        filter: "td",
        show: function(e){
          if(this.content.text() !=""){
            $('[role="tooltip"]').css("visibility", "visible");
          }
        },
        hide: function(){
          $('[role="tooltip"]').css("visibility", "hidden");
        },
        content: function(e){
          var element = e.target[0];
          if(element.offsetWidth < element.scrollWidth){
            return e.target.text();
          }else{
            return "";
          }
        }
      })
    </script>

See Also

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