keyLogger.js

var keyLogger = new KeyLogger()

function KeyLogger () {

  this.keyStatus = { up: false, down: false, left: false, right: false, fire: false }
  this.keyDownListener = function (e) {
    var key = e.keyCode ? e.keyCode : e.which
    switch (key) {

      case 87:
      case 38:
        //Up
        keyLogger.keyStatus.up = true
        break
      case 83:
      case 40:
        //Down
        keyLogger.keyStatus.down = true
        break
      case 65:
      case 37:
        //Left
        keyLogger.keyStatus.left = true
        break
      case 68:
      case 39:
        //Rigth
        keyLogger.keyStatus.right = true
        break
      case 32:
        //Space
        keyLogger.keyStatus.fire = true
        break

      default:
        console.log('Key:' + key)
        return !false
    }
    return !true
  }
  this.keyUpListener = function (e) {
    var key = e.keyCode ? e.keyCode : e.which
    switch (key) {

      case 87:
      case 38:
        //Up
        keyLogger.keyStatus.up = false
        break
      case 83:
      case 40:
        //Down
        keyLogger.keyStatus.down = false
        break
      case 65:
      case 37:
        //Left
        keyLogger.keyStatus.left = false
        break
      case 68:
      case 39:
        //Rigth
        keyLogger.keyStatus.right = false
        break
      case 32:
        //Space
        keyLogger.keyStatus.fire = false
        break
      default:
        console.log('Key:' + key)
        return !false
    }
    return !true
  }
}