Check this out:

The arrow keys have key codes, so for example the left arrow key has the code 37, right arrow key code is 39, up is 38, and down is 40.

Then you could use switch cases to determine which key was pressed:

document.onkeydown = function (event) { // to get the key 
      switch (event.keyCode) {
         case 37: // if it's the left arrow
            console.log("Left key is pressed.");
            break;
         case 38: // if it's the up arrow
            console.log("Up key is pressed.");
            break;
         case 39: // if it's the right arrow
            console.log("Right key is pressed.");
            break;
         case 40: // if it's the down arrow
            console.log("Down key is pressed.");
            break;
      }
   };

Check the link I sent above for more :)

Good luck! :D

Thank you!

function arrow() {
if (e.code == 'ArrowUp') {

}
if (e.code == 'ArrowDown') {

}
if (e.code == 'ArrowLeft') {

}
if (e.code == 'ArrowRight') {

}
}
document.addEventListener('keydown', arrow)

I used this in one of my projects, works but is not smooth.

You use this

EventTarget. addEventListener()