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Dynamic loading of external JavaScript files using the JS Loader

Source: Internet
Author: User
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Today on the internet found a can dynamically load JS file JS loader, the specific code is as follows:

Jsloader.js

1 varMinisite=NewObject ();2 /**3 * Judging Browser4  */5Minisite.browser={   6ie:/msie/. Test (Window.navigator.userAgent.toLowerCase ()),7moz:/gecko/. Test (Window.navigator.userAgent.toLowerCase ()),8opera:/opera/. Test (Window.navigator.userAgent.toLowerCase ()),9safari:/safari/. Test (Window.navigator.userAgent.toLowerCase ())Ten }; One /** A * Jsloader object is used to load external JS file -  */ -Minisite.jsloader={ the     /** - * Loading the external JS file - * @param surl The URL address of the JS to be loaded - * @fCallback JS Load After the completion of the processing function +      */ -Loadfunction(surl,fcallback) { +         var_script=document.createelement (' script ');  A_script.setattribute (' CharSet ', ' GBK ');  at_script.setattribute (' type ', ' Text/javascript ');  -_script.setattribute (' src ', sURL);  -document.getElementsByTagName (' head ') [0].appendchild (_script);  -         if(MiniSite.Browser.ie) { -_script.onreadystatechange=function(){    -                 if( This. readystate== ' Loaded ' | | This. readystaate== ' Complete '){  in                     //Fcallback (); -                     if(fcallback!=undefined) { to Fcallback (); +                     } -                       the                 }    *             };  $}Else if(MiniSite.Browser.moz) {Panax Notoginseng_script.onload=function(){    -                 //Fcallback (); the                 if(fcallback!=undefined) { + Fcallback (); A                 } the             };  +}Else{    -             //Fcallback (); $             if(fcallback!=undefined) { $ Fcallback (); -             } -         }    the     }    -};

Jsloader.js Test

1 <!DOCTYPE HTML>2 <HTML>3   <Head>4   <!--introduction of JS loader -5    <Scripttype= "Text/javascript"src= "Js/jsloader.js"></Script>6     <title>Jsloadertest.html</title>7     <Scripttype= "Text/javascript">8         if(MiniSite.Browser.ie) {9             //Dynamic Loading JSTen MiniSite.JsLoader.load ("Js/jquery-1.9.1.js",function(){ One Alert ("dynamically loaded is the Jquery-1.9.1.js"); A                 $(function(){ - Alert ("jquery-1.9.1.js processing operations after dynamic loading is complete"); -                 }); the             });  -         }Else{ - MiniSite.JsLoader.load ("Js/jquery-2.0.3.js",function(){ - Alert ("dynamically loaded is the Jquery-2.0.3.js"); +                 $(function(){ - Alert ("jquery-2.0.3.js processing operations after dynamic loading is complete"); +                 }); A             }); at         } -     </Script> -   </Head> -    -   <Body> -     in   </Body> - </HTML>

The test results are as follows:

Test results under IE browser:

Test results under Google Chrome:

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