动态加载JS和CSS

加载JS var JSLOADED=[];//已载入的文件//动态加载js、CSS文件function$_JS_LOADED = []; //已载入的文件 //动态加载js、css文件 function$import(type,src){ if(!_JS_LOADED[src]){      if(type==”js”){           try{               var xhr = window.ActiveXObject ? new ActiveXObject(“Microsoft.xmlHTTP”) : new xmlhttpRequest();               xhr.open(“GET”, src, false);               xhr.send(null);               if(200 == xhr.status || 0 == xhr.status){        if (window.execScript)           window.execScript(xhr.responseText);        else window.eval.call(window, xhr.responseText);               }$_JS_LOADED[src]){ if(type==”js”){ try{ var xhr = window.ActiveXObject ? new ActiveXObject(“Microsoft.XMLHTTP”) : new XMLHtt<a href="http://pr.vevb.com/">PR</a>equest(); xhr.open(“GET”, src, false); xhr.send(null); if(200 == xhr.status || 0 == xhr.status){ if (window.execScript) window.execScript(xhr.responseText); else window.eval.call(window, xhr.responseText); }$_JS_LOADED[src] = true; }catch(e){ alert(‘系统错误: 加载文件”’ + src + ‘”出错! /r/n[在第 ’ + e.lineNumber + ’ 行出现 ’ + e.message + ’ 错误]’); } }else if(type==”css”){ var css = document.createElement_x(“link”); css.setAttribute(“rel”, “stylesheet”); css.setAttribute(“type”, “text/css”); css.setAttribute(“href”, src); if (typeof css!=”undefined”){ document.getElementsByTagName_r(“head”)[0].appendChild(css); $_JS_LOADED[src] = true; }else{ alert(‘系统错误: 加载文件”’ + src + ‘”出错!’); } } } }

加载CSS