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I have an input 

<input type="text" name="Name" id="Name" data-bind="value: Name" style="display: none;" >

and a View Model:

name  : ko.observable()

The name value is added to the input when I click a link in another control.

But the 'change' event is not firing.

How can I get the value of the input to change?

deltree
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Htmllancer
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1 Answers1

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Perhaps, you can replace the change event by subscribing to changes of the observable (with the same effect).

<input type="text" name="Name" id="Name" data-bind="value: name" style="display: none;">

var Model = function() {
  var self = this;
  this.name = ko.observable();  
  this.name.subscribe(function () {
        alert(self.name());                
  });
};
ko.applyBindings(new Model());
gbs
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  • Thanks. But I decide to use custom ko.bindingHandlers ko.bindingHandlers.updateAction = { update: function (el) { ... my actions here ... } } – Htmllancer Sep 19 '12 at 13:22
  • change event is not automatically triggered when changing value of input programmatically (see also [here](http://stackoverflow.com/questions/5760873/trigger-change-event-when-setting-selects-value-with-val-function)). After changing the value, you need to explicitly trigger the change event. In jquery: $('input').val("aa").change(). And only then, you will be able to handle the change in your custom binding. – gbs Sep 19 '12 at 13:56