jquery延迟加载外部js实现代码

代码如下:var gaJsHost = ((“https:” == [removed].protocol) ? “https://ssl.” : “http://www.”); $.getScript(gaJsHost + “google-analytics.com/ga.js”,function(){ try { var pageTracker = _gat._getTracker(“UA-123456-16”); pageTracker._trackPageview(); } catch(err) {} });