Is it possible to trigger on change on Hidden input?

@zeeho_81Nov 29.2006

[CODE]<input type=”hidden” onchange=”some function”> [/CODE]

Is it possible to trigger the some function from a hidden field? I tried to change the value by javascript and call focus(), blur in order, seems nothing happen, fro m W3c, it does not say that the hidden field can not trigger onchange, Is it possible?

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JavaScript

@A1ien51Nov 30.2006 — #If you are setting the hidden, than you hsould not have to call onchange since you can call it where the value is being set.

Eric

@mrhooNov 30.2006 — #if you change, with [B]script[/B], the value of [B]any [/B] input field- hidden or text or select or whatever, the onchange event isn't fired.

Hidden elements don't show up when you tab through a form's elements, so I would guess they don't have any use for focus, either.

This is a silly question.

@philip_snyderDec 12.2009 — #This actually is not a silly question. There are times when you might want to chain a series of functions together based entirely on a value set in a hidden element by a different section of javascript code. A solution to your problem is to use a text input and set the css display to 'none'.

@A1ien51Dec 12.2009 — #You replied to a 3 year old question. lol

@philip_snyderDec 12.2009 — #Ok, so I'm the silly one now I guess. I forgot to mention something. You do have to invoke the element's onchange() method. But if you do it like I have described below, you'll get exactly what you're looking for.

[code=html]
 <html>
 <head>
 <script>
 var currVal = 0;
 function changeIt() {
 document.getElementById('changeMe').value = currVal++;
 document.getElementById('changeMe').onchange();
 }
 function handle_change(elem) {
 alert(elem.value);
 }
 
  </script>
 </head>
 <body>
 
 <input type="button" onclick="changeIt()" value="Change It"/>
 <input id="changeMe" type="text" value="" style="display: none;" onchange="handle_change(this)"/>
 
 </body>
 </html>
 [/code]

@philip_snyderDec 12.2009 — #It may be a 3 year old question... but the previous answers inspired me to do better.

@wakkiJan 05.2010 — #agree. this may be a 3 yr old question but the answer is very useful.. thanks for answering this post. i was searching for codes from google and found this thread.. i also have the same question.

(Is it possible to trigger on change on Hidden input?)

can i use hidden input instead of using text input and using ccs?

Is it possible to trigger on change on Hidden input?

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