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Question

Is there an opposite function of preventDefault() in JavaScript?

Answer 1

+3 A:

Shouldn't

if maxwords
   preventDefault
else
   return true

do the trick ?

Les 2009-11-06 16:14:14

You don't even need to return true.

David Dorward 2009-11-06 16:16:23

I thought so too, but I'm using jQuery's keypress method. So once the goal is reached, there is no way to "undo" it.

qwertypants 2009-11-06 16:35:34

Answer 2

+1 A:

simply use return true; at the end of your eventHandler. That would bubble up the event to the browser.

Tzury Bar Yochay 2009-11-06 16:14:25

Answer 3

+1 A:

Doesn't look like it, https://developer.mozilla.org/en/DOM/event , but you can just not call it...

Kobi 2009-11-06 16:15:08

@Downvoter - My answer was written before code was posted, and the code suggests confusion at best. The opposite of preventDefault is the default - do nothing.

Kobi 2009-11-06 19:08:17

Answer 4

+1 A:

I think the problem you are having is that you are not looking for the delete key. Preventdefault does not cancel the event handler all together. But with your code once you hit the maximum length of your field the user will no longer be able delete any characters because the delete keypress is being cancelled.

The reason it works in IE is because IE does not fire the keypress event for delete, end, enter, escape, function keys, home, insert, pageUp/Down and tab. In Safari the keycode for delete is incorrect in the keypress event.

For these reasons I have a twofold suggestion; first, use the keydown event instead so that you get the correct keycodes.

Second, look at the keycode and if it is delete or backspace then don't preventDefault.

if ((event.keyCode != 46 && event.keyCode != 8) || input_length > (wordNum - 1)) {
 return false;
} else {
 return true;
}

Pickle 2009-11-06 18:20:55

Nice explanation, I think you've found the real issue here.

Kobi 2009-11-06 19:10:05

This is exactly what I needed to happen. Thank you.

qwertypants 2009-11-07 01:09:08

Answer 5

A:

$("#delete_button").click(function(e){
            var category = $("#category").val();
            var answer = confirm("Are you sure you would like to delete the " + category + " category?");
            if (!answer)
                e.preventDefault();
        });

2010-05-28 18:38:30

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Is there an opposite function of preventDefault() in JavaScript?

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