Hexo

window.requestAnimationFrame = (function() {
    return window.requestAnimationFrame ||
        window.webkitRequestAnimationFrame ||
        window.mozRequestAnimationFrame ||
        window.oRequestAnimationFrame ||
        window.msRequestAnimationFrame || function(callback) {
            window.setTimeout(callback, 1000 / 60);
        };
})();
window.cancelNextRequestAnimationFrame = (function() {
    return window.cancelAnimationFrame ||
        window.webkitCancelAnimationFrame ||
        window.webkitCancelRequestAnimationFrame ||
        window.mozCancelRequestAnimationFrame ||
        window.oCancelRequestAnimationFrame ||
        window.msCancelRequestAnimationFrame ||
        clearTimeout;
})();