function Rotate(){
   var x = document.getElementById("rotatex").value;
   var y = document.getElementById("rotatey").value;
   var z = document.getElementById("rotatez").value;
   document.getElementById('cube').style.webkitTransform = "rotateX("+x+"deg) rotateY("+y+"deg) rotateZ("+z+"deg)";
   document.getElementById('cube').style.mozTransform = "rotateX("+x+"deg) rotateY("+y+"deg) rotateZ("+z+"deg)";

   document.getElementById('degx-span').innerText = x;
   document.getElementById('degy-span').innerText = y;
   document.getElementById('degz-span').innerText = z;
}

这样写好像是错的