jquery lazy loading external js implementation code_jquery

Copy code The code is as follows:

var gaJsHost = (("https:" == document.location. 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) {}
});