KeyO key code — keyCode 79

Letters

KeyO has keyCode 79 and key "o", at location 0.

The position is fixed as KeyA. Even when a Hangul ㅁ is typed, the code is still KeyA.

code (position): KeyO
key (US layout): "o"
With Shift: "O"
keyCode (deprecated): 79
Hexadecimal: 0x4F
location: 0 · Standard
Types a character: Yes
Shares keyCode with: None

In code

Comparing against code keeps working when the layout changes.

window.addEventListener('keydown', e => {
  if (e.code === 'KeyO') {
    // o
  }
});

code versus key

code is the physical position, the same on a Korean or French keyboard. key is what gets typed and changes — the same spot gives a, A or ㅁ. Use code to ask which spot was pressed, key to ask what was entered.

keyCode has been dropped from the standard. Write new code against code or key; the numbers here are for reading old code.

Keys of the same kind

KeyL KeyM KeyN KeyP KeyQ KeyR

How to read this

code is the position, key is the character typed. Match on code for shortcuts.
keyCode is deprecated; use it only to read old code.
Left and right Shift share a keyCode and are told apart by location.
The 1 on the number row and the 1 on the numpad are different keys — 49 and 97.

Frequently asked questions

Q. What is the keyCode for KeyO?

79, or 0x4F in hexadecimal.

Q. How do I match KeyO in code?

Compare with e.code === 'KeyO'. Matching on keyCode wobbles between browsers and layouts.

Q. What is this key's location?

Q. Does this key type a character?

Yes — key is "o", and "O" with Shift held.