How to convert a char to its keycode?

user_171365 0
Viewed 69582

How can I convert a character to its respective keycode?

For example:

  • a to 65
  • b to 66
  • c to 67
  • d to 68
jquery javascript
7 Answers

Here is a object with some keys and their corresponding keycodes:

{"0":48,"1":49,"2":50,"3":51,"4":52,"5":53,"6":54,"7":55,"8":56,"9":57,"d":68,"b":66,"a":65,"s":83,"i":73,"f":70,"k":75,"ß":219,"Dead":220,"+":187,"ü":186,"p":80,"o":79,"u":85,"z":90,"t":84,"r":82,"e":69,"w":87,"g":71,"h":72,"j":74,"l":76,"ö":192,"ä":222,"#":191,"y":89,"x":88,"c":67,"v":86,"n":78,"m":77,",":188,".":190,"-":189,"ArrowRight":39,"ArrowLeft":37,"ArrowUp":38,"ArrowDown":40,"PageDown":34,"Clear":12,"Home":36,"PageUp":33,"End":35,"Delete":46,"Insert":45,"Control":17,"AltGraph":18,"Meta":92,"Alt":18,"Shift":16,"CapsLock":20,"Tab":9,"Escape":27,"F1":112,"F2":113,";":188,":":190,"_":189,"'":191,"*":187,"Q":81,"W":87,"E":69,"R":82,"T":84,"Z":90,"S":83,"A":65,"D":68,"I":73,"U":85,"O":79,"Y":89,"X":88,"C":67,"F":70,"V":86,"G":71,"B":66,"H":72,"N":78,"J":74,"M":77,"K":75,"L":76,"P":80,"Ö":192,"Ä":222,"Ü":186,"!":49,"\"":50,"§":51,"$":52,"%":53,"&":54,"/":55,"(":56,")":57,"=":48,"?":219,"°":220}

if some keys are missing or are different for your browser, you can use the following function:

let a = {}
document.addEventListener("keydown", ({key, keyCode}) => a[key] = keyCode);

Just copy it to the console and smash your head on the keyboard. The result will be stored in a

user_99911910

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.

user_37736580 

let character = prompt('input a character');

console.log(character.charCodeAt(0));

for basic concept,you should use the method 'string.charCodeAt(0)'. for Example in Javascript , 'A'.charCodeAt(0).

user_170887860
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