how to convert char to keycode

Question

how can i convert a char to its respective keycode.

Answer 1

You can use the

charCodeAt

function to achieve this.

Working demo

Eg:

<SCRIPT>

function showKeyCode()
{
    var character = document.getElementById ( "character" ).value.substring(0,1);
    var code = document.getElementById ( "character" ).value.charCodeAt(0);
    var msg = "The Key Code for the \""+character+"\" character is "+code+".";
    alert(msg);
}
</script>


<input type="text" id="character" size="15">
<input type="button" value="Show Key Code" onclick="showKeyCode();">

Answer 2

see http://stackoverflow.com/questions/302122/jquery-event-keypress-which-key-was-pressed

Answer 3

Find a keycode/ascii chart like this one and put it into an array such that array['char'] = keycode. This is tedious, but the code will execute pretty fast.

Answer 4

What do you mean by "keyCode"? Different browsers have different keyCode values in keyup and keydown events which will not necessarily correspond to the ASCII code for the corresponding character. For alphanumeric keys, the keypress event will give you the ASCII code in most browsers via the charCode or which properties. This page is useful.