an example of using accelerometers on the ipad in js

accellerometer.js

(function() {
  var acceleration = {
    x:0,
    y:0
  };

  var div;

  var init = function(){
    div = document.getElementById("anObject");
    div.x = 0;
    div.y = 0;
  };
  
  var motionHandler = function(event){
    acceleration.x = event.accelerationIncludingGravity.x;
    acceleration.y = event.accelerationIncludingGravity.x;
    moveDiv();
  };

  var moveDiv = function(){
    div.x += acceleration.x;
    div.y += acceleration.y;
    updateDiv();
  };

  var updateOrientation = function(){
    if (document.body.scrollWidth < 1024) {
      this.orientation = "portrait"; 
    } else if (document.body.scrollWidth > 768) {
      this.orientation = "landscape";
    }
  }

  var updateDiv = function(){
    div.style.webkitTransform = "translate3d(" + div.x + "px, " + div.y + "px, 0)";
  };


  window.addEventListener("load", init,false);
  window.addEventListener("devicemotion",motionHandler,false);
  window.addEventListener("deviceorientation",orientationHandler,false);


}).call(this);