Copy text of a field into another automatically

Question

I need to copy the text entered in a field (whether it was typed in, pasted or from browser auto-filler) and paste it in another field either at the same time or as soon as

Answer 1

If you are using jQuery, it is very easy - you need just register the right function on the right event :)

Here's the code:

$(function(){
    var $foo = $('#foo');
    var $bar = $('#bar');
    function onChange() {
        $bar.val($foo.val());
    };
    $('#foo')
        .change(onChange)
        .keyup(onChange);
});

JSFiddle: http://jsfiddle.net/6khr8e2b/