After receiving several 0/5 ratings on my space game on Newgrounds, I’ve discovered that many players of my game are unable to play because of their browser-default keybinds. For example, pressing spacebar causes the screen to scroll down in many browsers. Thankfully, this can be fixed with a little bit of JavaScript. Below are some ‘insertable’ lines of code to disable common gameplay keys.

Disable Spacebar

window.onkeydown = function(e) { return !(e.keyCode == 32); };

Disable Arrow Keys and Spacebar

window.addEventListener("keydown", function(e) { 
  // space and arrow keys 
  if([32, 37, 38, 39, 40].indexOf(e.keyCode) > -1) { 
  }, false);

For a quick way to get key codes for other keyboard keys, you can check here: