Dynamic introduction of JS file

    var src = "/scripts/test.js";      $ ("<script type = ' text/javascript ' src= '" + src + "' ><\/script>"). AppendTo ("Head");  // Dynamic Loading    TestAlert123123 ();   // calling a function in Test.js

Second, order to add (QQ)

 <script src=" jquery/jquery-1.4.1.js "type=" Text/javascript "> </script> <script src= "js/hello.js" type= "Text/javascript" ></script> <script src= "Js/world.js "Type=" Text/javascript "></script> <script type=" Text/javascript ">functionloadscript (URL, callback) {varScript = document.createelement ("Script"); Script.type= "Text/javascript"; //IE             if(script.readystate) {Script.onreadystatechange=function () {                     if(Script.readystate = = "Loaded" | | script.readystate = = "complete") {Script.onreadystatechange=NULL;                     Callback (); }                 }             } Else {                 //Non-IEScript.onload =function() {callback (); }} script.src=URL; document.getElementById ("Head"). appendchild (script); }         //The first step is to load the jquery class libraryLoadscript ("Jquery/jquery-1.4.1.js",function () {             //Second Step loading hello.jsLoadscript ("Js/hello.js",function () {                 //Third Step loading world.jsLoadscript ("Js/world.js",function () {                  });         });     }); </script>