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Customize Masks in the MaskedTextBox through MVVM

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 mask of the Kendo UI for jQuery MaskedTextBox?

Solution

The following example demonstrates how to implement a custom MVVM binding to set the mask option 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-bind="value: phoneNumber, mask: mask"
                   style="width: 200px">
            <button class="k-button k-button-md k-rounded-md k-button-solid k-button-solid-base"  data-bind="click: changeMask"><span class="k-button-text">Change mask</span></button>
        </div>
    </div>
    <script>
        kendo.data.binders.widget.mask = 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;
            },
            refresh: function () {
                var value = this.bindings.mask.get();

                this.widget.setOptions({ mask: value });
            }
        });

        var viewModel = kendo.observable({
            phoneNumber: "(123) 456-6789",
            mask: "(999) 000-0000",
            changeMask: function() {
                viewModel.set("mask", "99999");
            }
        });

        kendo.bind($("#example"), viewModel);
    </script>
</div>

See Also

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