jQuery(function($){
    $('form input').change(function() { // works when input will be blured and the value was changed
        //alert('input value changed');
        $('.log').append(' change');
    });
    $('form input').keyup(function() { // works immediately when user press button inside of the input
        $(this).change(); // simulate "change" event
    });
});

<form>
    <input type="text" placeholder="type here to test events...">
    <div class="log">log of change and keyup events. </div>
</form>

2 thoughts on “jQuery input value change() on keyup”

1. it doesn't work. When I enter some text and then press arrow buttons it will write that text changed but it is false.

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   • Yes, you're right, code triggers only for keyup actions.
     You may re-write your code by remembering prev string in text input and comparing it with current.
     If these strings are different, you may trigger your custom action.

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