key_pressed-function.js

function key_pressed(key) //called when a key is pressed
{
  // key.key is the name of the key
  if (key.key == "ArrowUp")
  {
    console.log("up");
  }

  if (key.key == "ArrowLeft")
  {
    console.log("left");
  }

  if (key.key == "ArrowRight")
  {
    console.log("right");
  }
}