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columns.title String

The text that is displayed in the column header cell. If not set the field is used.

Example - set the title of the column

<div id="treelist"></div>
    columns: [
      { field: "lastName", title: "Last Name" },
      { field: "position", title: "Position" }
    dataSource: {
      data: [
        { id: 1, parentId: null, lastName: "Jackson", position: "CEO" },
        { id: 2, parentId: 1, lastName: "Weber", position: "VP, Engineering" }
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