Detect all changes to a <input type="text"> (immediately) using JQuery

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There are many ways the value of a <input type="text"> can change, including:

  • keypresses
  • copy/paste
  • modified with JavaScript
  • auto-completed by browser or a toolbar

I want my JavaScript function to be called (with the current input value) any time it changes. And I want it to be called right away, not just when the input loses focus.

I'm looking for the cleanest and most robust way to do this across all browsers (using jQuery preferably).


This jQuery code catches immediate changes to any element, and should work across all browsers:

 $('.myElements').each(function() {
   var elem = $(this);

   // Save current value of element
   elem.data('oldVal', elem.val());

   // Look for changes in the value
   elem.bind("propertychange change click keyup input paste", function(event){
      // If value has changed...
      if (elem.data('oldVal') != elem.val()) {
       // Updated stored value
       elem.data('oldVal', elem.val());

       // Do action
       ....
     }
   });
 });

Detect all changes to a <input type=“text”> (immediately) using , This jQuery code is used to catch the immediate changes to any element, you can use this for all browsers like this: $('. This jQuery code is used to catch the immediate changes to any element, you can use this for all browsers like this: $ ('.myElements').each (function () { var elem = $ (this); // Save current value of element


A real-time fancy solution for jQuery >= 1.9

$("#input-id").on("change keyup paste", function(){
    dosomething();
})

if you also want to detect "click" event, just:

$("#input-id").on("change keyup paste click", function(){
    dosomething();
})

if you're using jQuery <= 1.4, just use live instead of on.

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Binding to the oninput event seems to work fine in most sane browsers. IE9 supports it too, but the implementation is buggy (the event is not fired when deleting characters).

With jQuery version 1.7+ the on method is useful to bind to the event like this:

$(".inputElement").on("input", null, null, callbackFunction);

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2017 answer: the input event does exactly this for anything more recent than IE8.

$(el).on('input', callback)

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