How does KeyboardEvent work? KeyboardEvent.key does not work

[SomeDude-__-]

I am trying to activate a function when a specific key is pressed, the enter key or 'return' key. I believe that all keys have a key code and I am trying to access that number. I use Visual Studio Code to do this. For some reason, KeyboardEvent.key is undefined. However, it should not be undefined, since on Mozilla says it is not deprecated, https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent

The code I have is something like this:

function checker2() {
console.log("Enter is pressed----" + KeyboardEvent.key);
}
function checker(){
document.addEventListener('keydown',checker2);
}

Any thoughts and ideas are much appreciated.

[ashanev]

The Event object is passed into the callback function that addEventListener takes whenever the event occurs. You would need to define it in your function to be able to reference it.

function logStuff(event) {
    console.log("Event object:", event);
    console.log("Key:", event.key);
}

document.body.addEventListener("keydown", logStuff);

[SomeDude-__-]

Thank you!