//Capture Key Strokes function keyboard(keyCode) { var key = {}; key.code = keyCode; key.isDown = false; key.isUp = true; key.press = undefined; key.release = undefined; //The `downHandler` key.downHandler = function(event) { if (event.keyCode === key.code) { if (key.isUp && key.press) key.press(); key.isDown = true; key.isUp = false; } event.preventDefault(); }; //The `upHandler` key.upHandler = function(event) { if (event.keyCode === key.code) { if (key.isDown && key.release) key.release(); key.isDown = false; key.isUp = true; } event.preventDefault(); }; //Attach event listeners window.addEventListener( "keydown", key.downHandler.bind(key), false ); window.addEventListener( "keyup", key.upHandler.bind(key), false ); return key; }