JavaScript requestAnimationFrame动画详解

// Adapted from https://gist.github.com/paulirish/1579671 which derived from 
// http://paulirish.com/2011/requestanimationframe-for-smart-animating/
// http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating

// requestAnimationFrame polyfill by Erik Möller.
// Fixes from Paul Irish, Tino Zijdel, Andrew Mao, Klemen Slavi"htmlcode">

function animate() {
  console.log("animation");
  window.requestAnimationFrame(animate);
 }
animate();





requestAnimationFrame(animate)是关键，它为要执行的函数设置了动画，所以浏览器控制台会一直执行animate()函数。
浏览器兼容性

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