JavaScript检测浏览器类型与IE版本：跨内核与IE系列解析

<SCRIPT language="JavaScript">
function myexplorer(){
if (!!window.ActiveXObject || "ActiveXObject" in window){//IE
  if (!window.XMLHttpRequest){
  return myexplorer="IE6";
  }else if (window.XMLHttpRequest && !document.documentMode){
  return myexplorer="IE7";
  }else if (!-[1,] && document.documentMode && !("msDoNotTrack" in window.navigator)){
  return myexplorer="IE8";
  }else{//IE9 10 11
  var hasStrictMode=(function(){"use strict";return this===undefined;}()); 
  if (hasStrictMode){
    if (!!window.attachEvent){
      return myexplorer="IE10";
    }else{
      return myexplorer="IE11";
    }
  }else{
    return myexplorer="IE9";
  }
  }
}else{//非IE
  if (/firefox/.test(navigator.userAgent.toLowerCase())){
    return myexplorer="Gecko内核";
  }else if (!/opr/.test(navigator.userAgent.toLowerCase()) && !/chrome/.test(navigator.userAgent.toLowerCase()) && /safari/.test(navigator.userAgent.toLowerCase())){
    return myexplorer="webkit内核(Safari)";
  }else if (!/opr/.test(navigator.userAgent.toLowerCase()) && /chrome/.test(navigator.userAgent.toLowerCase())){
    return myexplorer="webkit内核(Chrome)";
  }else if (/opr/.test(navigator.userAgent.toLowerCase())){
    return myexplorer="Opera内核";