How to convert a char to its keycode?

Question

How can I convert a character to its respective keycode?

For example:

• a to 65
• b to 66

Answer 1

I was searching for this when I stumbled upon this question. I do not think the marked answer is the right answer. For simple letters, A-Za-z, I use the following:

function getKeyCode(char) {
  var keyCode = char.charCodeAt(0);
  if(keyCode > 90) {  // 90 is keyCode for 'z'
    return keyCode - 32;
  }
  return keyCode;
}

Please note that this is meant to work for characters A-Z and a-z only.