Question

I am working in javascript. I want to add validation on my text field that only characters are allowed.

along with characters, I allowed left arrow key which has keycode 37. But this is creating problem because keycode of % is also 37. And I dont want to allow % symbol.

Please suggest me how can I differenciate % and left arrow key , because both key code are 37 ?

Answer 1

If you press the ‘percent’ key the char code is 37, for the ‘left arrow’-key it’s not 37; e.g.:

$('#test').keypress(function(oEvent) {
    if (oEvent.charCode == 37) {
        return false;
    }
});

Also see this jsfiddle.

=== UPDATE ===

For additional internet explorer support:

$('#test').keypress(function(oEvent) {
    var iCode = typeof oEvent.charCode == 'number' ? oEvent.charCode : oEvent.keyCode;
    if (iCode == 37) {
        return false;
    }
});

Also see this jsfiddle.