jQuery Keydown - Arrow Keys

jquery_keydown_arrow_keys.js

var goLeft = function() {
  console.log('to left');
};

var goRight = function() {
  console.log('to right');
};

var goUp = function() {
  console.log('to up');
};

var goDown = function() {
  console.log('to down');
};

// requires jquery
$(document).on('keydown',function(e){
   var act={37:goLeft, 38:goUp, 39:goRight, 40:goDown};
   if(act[e.which]) var a=new act[e.which];
});