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Expand

events

Fires when an item is about to be expanded. The event handler function context (available through the this keyword) will be set to the widget instance.

expand

Event Data

e.sender `kendo.ui.TreeList`

The widget instance which fired the event.

e.model `kendo.data.TreeListModel`

The data item to which the table row is bound.

e.preventDefault `Function`

If invoked, prevents the expand action. The child table rows will not be shown.

<div id="treeList"></div>
 <script>
    $("#treeList").kendoTreeList({
      columns: [
        { field: "Name" },
        { field: "Position" }
      ],
      dataSource: [
        { id: 1, Name: "Daryl Sweeney", Position: "CEO", parentId: null },
        { id: 2, Name: "Guy Wooten", Position: "Chief Technical Officer", parentId: 1 }
      ],
      expand: function(e) {
/* The result can be observed in the DevTools(F12) console of the browser. */
        console.log("expand");
      }
    });
</script>

<div id="treeList"></div>
<script>
  function expand(e) {
/* The result can be observed in the DevTools(F12) console of the browser. */
    console.log("expand");
  }
  $("#treeList").kendoTreeList({
    columns: [
      { field: "Name" },
      { field: "Position" }
    ],
    dataSource: [
      { id: 1, Name: "Daryl Sweeney", Position: "CEO", parentId: null },
      { id: 2, Name: "Guy Wooten", Position: "Chief Technical Officer", parentId: 1 }
    ]
  });

  var treeList = $("#treeList").data("kendoTreeList");
  treeList.bind("expand", expand);
</script>

Expand

expand

Event Data

e.sender kendo.ui.TreeList

e.model kendo.data.TreeListModel

e.preventDefault Function

e.sender `kendo.ui.TreeList`

e.model `kendo.data.TreeListModel`

e.preventDefault `Function`