requestAnimationFrame

window.onload = function () {
  var oBox = document.getElementById("box");
  var rAF = window.requestAnimationFrame;

  var degrees = 0;
  function update() {
    oBox.style.transform = "rotate(" + degrees + "deg)";
    console.log("updated to degrees " + degrees);
    degrees = degrees + 2;
    rAF(update);
  }
  rAF(update);
};