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Filter Values in MultiSelects Sharing the Same Data

Environment

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

Description

How can I filter the values of two Kendo UI widgets, which share the same data, based on user selection?

Solution

The following example demonstrates how to achieve the desired scenario.

    <select id="multiselect1">
    </select>
    <br />
    <select id="multiselect2">
    </select>
    <script>
      var initialData = [{id:1, name: "item1"}, {id:2, name: "item2"}, {id:3, name: "item3"}];

      function distinctValues(values) {
        return initialData.filter(function(current){
          return values.filter(function(initial){
            return initial == current.id
          }).length == 0
        });
      }

      $("#multiselect1").kendoMultiSelect({
        dataSource: initialData,
        dataTextField: "name",
        dataValueField: "id",
        change: function() {
          var ms2 = $("#multiselect2").getKendoMultiSelect();
          var values = distinctValues(this.value());
          ms2.dataSource.data(values);
        }
      });

      $("#multiselect2").kendoMultiSelect({
        dataTextField: "name",
        dataValueField: "id",
        dataSource: initialData,
        change: function() {
          var ms1 = $("#multiselect1").getKendoMultiSelect();
                    var values = distinctValues(this.value());
          ms1.dataSource.data(values);
        }
      });
    </script>

See Also

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