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Change event not fired when setting value from code

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NumericTextBox
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László
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László asked on 20 Nov 2013, 11:43 AM
Hi,

I found a strange behaviour of the numerictextbox's change event. If I change the value of the widget from code it doesn't fire the change event:
<body>
  <input id="numerictextbox" />
  <script>
  var textBox = $("#numerictextbox").kendoNumericTextBox({
    change: function() {
        var value = this.value();
        alert(value);
      }
  }).data("kendoNumericTextBox");
   
    textBox.value(12345); // this should fire change event.
  </script>
</body>
 Is it by design behaviour, or is it a bug?

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Georgi Krustev
Telerik team
answered on 20 Nov 2013, 01:40 PM
Hello,

This behavior is by design. Widget will raise change event only on user interaction. Find more information about this here.

Regards,
Georgi Krustev
Telerik
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Bilal
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answered on 01 Apr 2015, 06:08 AM
Hi,
I was looking for the same problem online and passed by this post.

The link for trigger method is broken on the page mentioned above.

http://docs.telerik.com/kendo-ui/api/framework/widget#trigger

How to trigger event on numerictextbox after setting its value by code?

Thanks
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László
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answered on 01 Apr 2015, 06:40 AM
Hello Bilal,

Try this:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Untitled</title>
 
 
  <script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
  </head>
<body>
    <input id="numerictextbox" />
  <button onclick="changeValueFromCode()">Click to change value from code</button>
  <script>
 
  var textBox = $("#numerictextbox").kendoNumericTextBox({
    change: function() {
 
        var value = this.value();
        alert('value changed to: ' + value);
      }
  }).data("kendoNumericTextBox");
     
    function changeValueFromCode()
    { 
    textBox.value(12345);
    textBox.trigger('change');
    }
     
  </script>
</body>
</html>


The documentation is here about trigger:

http://docs.telerik.com/kendo-ui/api/javascript/ui/widget#methods-trigger


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Bilal
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answered on 01 Apr 2015, 09:30 AM
Thanks László a lot :)
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Georgi Krustev
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Bilal
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László
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