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filterable.operators.string.isempty String (default: "Is empty")

The text of the "isempty" filter operator.

Example - set the string "isempty" operator

<div id="grid"></div>
<script>
$("#grid").kendoGrid({
  columns: [
    { field: "name" }
  ],
  dataSource: [
    { name: "Jane Doe" },
    { name: "John Doe" }
  ],
  filterable: {
    operators: {
      string: {
        isempty: "Empty"
      }
    }
  }
});
</script>