jQuery keyup keyCode doesn't work in Opera

问题

Is it possible that the opera browser ignore the keyCode 40 (arrow down)?

 $('#test').keyup(function(e) {
        $('body').append('' + e.keyCode + '');
 })

Test it at: http://www.jsfiddle.net/V9Euk/454/

Thanks in advance!
Peter

回答1:

Try to use the autocomplete attribute, and set it to off:

<input id="test" value="" autocomplete="off" >

Opera uses the arrow down key for auto completion, and may therefore suppress the forwarding of the event.

Working test: http://www.jsfiddle.net/V9Euk/455/

回答2:

Yes, this does not work (seems like opera does not support it). Have a look at this test page from www.w3.org showing you what your broswer detects (keyup is not fired).

来源：https://stackoverflow.com/questions/3624812/jquery-keyup-keycode-doesnt-work-in-opera