个回答

• 慕斯929905

  2017-05-18 22:56:11

  谢谢！是

  0

• 一笔一画都是劫

  2017-05-18 17:31:55

  window.requestAnimFrame = (function(){

  return window.requestAnimationFram ||

  window.webkitRequestAnimationFram ||

  window.mozRequestAnimationFrame ||

  window.oRequestAnimationFrame ||

  window.msRequestAnimationFrame ||

  function(/* function FrameRequestCallback */ callback, /* DOMElement Element */ element){

  return window.setTimeout(callback, 1000 / 60);

  }

  })();

  
  

  0