AJAX取瀏覽器類型並進行建立

AJAX取瀏覽器類型並進行建立

代碼如下

複製代碼

function InitAjax() { var agt = navigator.userAgent.toLowerCase(); var is_opera = (agt.indexOf("opera") != -1); var is_ie = (agt.indexOf("msie") != -1) && document.all && !is_opera; var is_ie5 = (agt.indexOf("msie 5") != -1) && document.all; if (is_ie) {       var control = (is_ie5) ? "Microsoft.XMLHTTP" : "Msxml2.XMLHTTP";   try {          return new ActiveXObject(control);   } catch(e) {    alert("You need to enable active scripting and activeX controls");    DumpException(e);   } } else {   return new XMLHttpRequest(); } }