ZK 5.0.11 After setting value on a widget via 'w:onClick', how does one make the widget to send its value to the component, so that it can be used in a composer?

asked 2014-09-22 08:50:32 +0800

abcd123 gravatar image abcd123
17 3


I have w:onClick on a button which executes a custom javascript and sets value of a different widget:

i.e. this.$f('is123').setValue( javascript_computation );

After the javascript finishes and I inspect the value of 'id123' in a composer, the value is unchanged.

In version 3.6.5, I used comm.sendEvent, however that is unavailable in version 5.

Thanks for your help.

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answered 2014-09-28 12:21:12 +0800

Darksu gravatar image Darksu
1991 1 4

Hello abcd123,

The solution to your problem is that you have to fire an event to the widget. For more information please look at the following url's:



Best Regards,


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answered 2016-12-07 16:41:27 +0800

WilliamB gravatar image WilliamB
1609 1 6

updated 2016-12-07 16:44:32 +0800

How one would do that when changing a label value ? I added an event listener on the widget for a textarea in a custom component

textArea.setWidgetListener(Events.ON_CHANGING, "this.nextSibling.firstChild.setValue(event.data.value.length)");

To update a label with a counter. But on the server side, the value of the counter is never updated. And I've a button which call the server and , among other things, clear the textarea of the component, and thus I want to reset the counter label to 0 but since server side it's still 0 it nevers updated the value on the front ...

The idea was to use a front side listener to avoid adding the listener on java side ... and maybe avoid calling the server on each onChanging of the textarea.

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Asked: 2014-09-22 08:50:32 +0800

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Last updated: Dec 07 '16

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