个回答

• qq_一头会飞的翔_03623174

  2017-05-07 11:36:38

  window.requestAnimFrame = (function() {

  return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame ||

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

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

  };

  })();

  
  

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