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Use Custom MVVM Binding to Set the MaskedTextBox Model Value

Environment

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

Description

How can I use MVVM to set the unmasked value of the Kendo UI for jQuery MaskedTextBox?

Solution

The following example demonstrates how to implement a custom MVVM binding to set the model value of the MaskedTextBox.

<div id="example">
    <div class="demo-section k-header">
        <div class="box-col" style="width: 300px">
            <h4>Enter a number</h4>
            <input data-role="maskedtextbox"
                   data-mask="(999) 000-0000"
                   data-bind="raw: phoneNumber"
                   style="width: 200px">

            <span data-bind="text: phoneNumber"></span>
        </div>
    </div>
    <script>
        kendo.data.binders.widget.raw = kendo.data.Binder.extend({
            init: function (widget, bindings, options) {
                //call the base constructor
                kendo.data.Binder.fn.init.call(this, widget.element[0], bindings, options);
                this.widget = widget;
                this._change = $.proxy(this.change, this);
                this.widget.first("change", this._change);
                this._initChange = false;
            },
            change: function() {
              var that = this;
              var value = that.widget.raw();

              that._initChange = true;

              that.bindings.raw.set(value);

              that._initChange = false;
            },
            refresh: function () {
              if (!this._initChange) {
                var value = this.bindings.raw.get();
                this.widget.value(value);
              }
            }
        });
        var viewModel = kendo.observable({
            phoneNumber: "1234566789"
        });
        kendo.bind($("#example"), viewModel);
    </script>
</div>

See Also

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