requestAnimationFrame iOS中的UIWebView未定义？ [英] requestAnimationFrame undefined in iOS UIWebView?

问题描述

requestAnimationFrame 似乎是未定义在的UIWebView 。有没有做同样的事情或做我必须使用另一个函数的setTimeout ？

requestAnimationFrame seems to be undefined in UIWebView. Is there another function that does the same thing or do I have to use setTimeout?

推荐答案

它看起来像这不是当前的WebKit版本都支持，所以你必须使用一个超时。 本网站提供了如何创建一个跨平台解决方案的例子：

It looks like this is not currently supported in all versions of WebKit, so you'll have to use a timeout. This site provides an example of how to create a cross-platform solution:

// via http://paulirish.com/2011/requestanimationframe-for-smart-animating/
window.requestAnimFrame = (function(){
    return  window.requestAnimationFrame   || 
        window.webkitRequestAnimationFrame || 
        window.mozRequestAnimationFrame    || 
        window.oRequestAnimationFrame      || 
        window.msRequestAnimationFrame     || 
        function(/* function */ callback, /* DOMElement */ element){
             window.setTimeout(callback, 1000 / 60);
        };
})();

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