jquery - detecting textbox change when changing the content programmatically

Question

I have a textbox that's linked to a jquery event handler like this:

$('#SomeDiv').on({

   mouseenter: ....
   mouseleave: ....
   blur: ....
   keyup: function() { HandlerForKeyUp($(this)); } ,
   change: function() { HandlerForKeyUp($(this)); } 

}, '.MyTextBoxes');

Basically, HandlerForKeyUp is a function that shows a counter of the number of letters in the textbox. It works fine when the user is typing.

However, if I write this:

$('#SomeTextBox').val(SomeValue);

the HandlerForKeyUp function doesn't trigger, even thought I have the change event mapped out in the .on handler and SomeTextBox is of class MyTextBoxes and reacts to all other events. Basically, if the user types the counter works but if I set the value of the textbox at runtime the counter function doesn't trigger.

Any idea on how I could change this?

Thanks for your suggestions.

Answer 1

You need to fire the change event manually.

$('#SomeTextBox').val(SomeValue).change();