alert immediately after text field get a value - javascript

Question

I have a text field which is getting values from some process. I mean the user is not giving any input to this text field directly! Now my problem is that I want the value of that text field immediately after it changes. I tried

oninput and onchange

Here is the bin of what I have tried. Both events want to focus of that area please tell me is there any way to achieve this

When said other process changes the input, have it trigger the input's change event. — Kevin B, Feb 19 '14 at 15:25
This is not a jQuery question. His JS Bin has no jQuery: it is vanilla — Clint Powell, Feb 19 '14 at 15:32
You can find a your answer here http://stackoverflow.com/questions/16601556/how-do-i-trigger-an-onchange-event-for-a-hidden-field hope it can help you — WSouBar, Feb 19 '14 at 15:33
@thelambdaC yes u r rite bt i meant that you can give me jquery solution too :) — Null, Feb 19 '14 at 15:34

Clint Powell · Accepted Answer · 2014-02-19T15:37:00.080

7

As Kevin B suggested, trigger the event manually from the process that changes 'a'.

Essentially, on button click:

var a = document.getElementById('a');
a.value = value;
a.onchange();

A jQuery solution is here: http://jsbin.com/vozilevu/2

$('#my-button').click(function() {
    $('#a').val('a').change();
});

edited Feb 19 '14 at 15:37

answered Feb 19 '14 at 15:29

Clint Powell

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score 0 · Answer 2 · answered Feb 19 '14 at 15:32

0

If you really want to trigger a change event each time a character is entered, you can use something like this:

<input type="text" id="a" onkeyup="alert( document.getElementById('a').value )">

answered Feb 19 '14 at 15:32

szr

139
10

2

This will not work for his situation: the button's `onclick` event is changing the value. The idea is he wants a programmatic change of value, not user input. – Clint Powell Feb 19 '14 at 15:33

alert immediately after text field get a value - javascript

2 Answers2