How to decode character pressed from jQuery's keydown()'s event handler

user_238030 0
Viewed 87541

I need to figure out which character was typed into a text field from within the handler that is called by jQuery's keydown function. key.which gives me only the keycode, but I need to figure out which ASCII character key represents. How do I do this?

keydown character event-handling jquery
5 Answers

For character input, it is suggested you use keypress(), which will report the actual ASCII code for the character pressed. It automatically takes care of letter case, and ignores non-character presses. In either case, you can use fromCharCode() to convert to a string representation. E.g.

var c = String.fromCharCode(e.which) // or e.keyCode

Just remember that for keydown() and keyup(), you'll have to keep track of the case using the e.shiftKey state.

user_1817650

I do this. It will just ignore the keypress if the value is not a number. Seems to work without any problems...

    $("input").on("keypress", function(e) {
        if(!jQuery.isNumeric(String.fromCharCode(e.which)))
            return false;
    });
user_12734130
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