判断浏览器版本——JS

IE 方法1：

var browser=navigator.appName 
var b_version=navigator.appVersion 
var version=b_version.split(";"); 
var trim_Version=version[1].replace(/[ ]/g,""); 
if(browser=="Microsoft Internet Explorer" && trim_Version=="MSIE6.0") 
{ 
alert("IE 6.0"); 
} 
else if(browser=="Microsoft Internet Explorer" && trim_Version=="MSIE7.0") 
{ 
alert("IE 7.0"); 
} 
else if(browser=="Microsoft Internet Explorer" && trim_Version=="MSIE8.0") 
{ 
alert("IE 8.0"); 
} 
else if(browser=="Microsoft Internet Explorer" && trim_Version=="MSIE9.0") 
{ 
alert("IE 9.0"); 
} 

IE 方法2：

if(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion .split(";")[1].replace(/[ ]/g,"")=="MSIE6.0") 
{ 
alert("IE 6.0"); 
} 
else if(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion .split(";")[1].replace(/[ ]/g,"")=="MSIE7.0") 
{ 
alert("IE 7.0"); 
} 
else if(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion .split(";")[1].replace(/[ ]/g,"")=="MSIE8.0") 
{ 
alert("IE 8.0"); 
} 
else if(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion .split(";")[1].replace(/[ ]/g,"")=="MSIE9.0") 
{ 
alert("IE 9.0"); 
} 

IE 方法3：

if(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.match(/7./i)=="7.") 
{ 
alert("IE 7.0"); 
} 
else if(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.match(/8./i)=="8.") 
{ 
alert("IE 8.0"); 
} 
else if(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.match(/9./i)=="9.") 
{ 
alert("IE 9.0"); 
} 
else if(navigator.appName == "Microsoft Internet Explorer") 
{ 
alert("IE 6.0"); 
} 

所有浏览器

 //判断当前浏览类型  
  function BrowserType()  
  {  
      var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串  
      var isOpera = userAgent.indexOf("Opera") > -1; //判断是否Opera浏览器  
      var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //判断是否IE浏览器  
      var isEdge = userAgent.indexOf("Windows NT 6.1; Trident/7.0;") > -1 && !isIE; //判断是否IE的Edge浏览器  
      var isFF = userAgent.indexOf("Firefox") > -1; //判断是否Firefox浏览器  
      var isSafari = userAgent.indexOf("Safari") > -1 && userAgent.indexOf("Chrome") == -1; //判断是否Safari浏览器  
      var isChrome = userAgent.indexOf("Chrome") > -1 && userAgent.indexOf("Safari") > -1; //判断Chrome浏览器  
  
      if (isIE)   
      {  
           var reIE = new RegExp("MSIE (\\d+\\.\\d+);");  
           reIE.test(userAgent);  
           var fIEVersion = parseFloat(RegExp["$1"]);  
           if(fIEVersion == 7)  
           { return "IE7";}  
           else if(fIEVersion == 8)  
           { return "IE8";}  
           else if(fIEVersion == 9)  
           { return "IE9";}  
           else if(fIEVersion == 10)  
           { return "IE10";}  
           else if(fIEVersion == 11)  
           { return "IE11";}  
           else  
           { return "0"}//IE版本过低  
       }//isIE end  
         
       if (isFF) {  return "FF";}  
       if (isOpera) {  return "Opera";}  
       if (isSafari) {  return "Safari";}  
       if (isChrome) { return "Chrome";}  
       if (isEdge) { return "Edge";}  
   }//myBrowser() end  
     
   //判断是否是IE浏览器  
   function isIE()  
   {  
      var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串  
      var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //判断是否IE浏览器  
      if(isIE)  
      {  
          return "1";  
      }  
      else  
      {  
          return "-1";  
      }  
   }  
     
     
   //判断是否是IE浏览器，包括Edge浏览器  
   function IEVersion()  
   {  
      var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串  
      var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //判断是否IE浏览器  
var isEdge = userAgent.indexOf("Windows NT 6.1; Trident/7.0;") > -1 && !isIE; //判断是否IE的Edge浏览器  
      if(isIE)  
      {  
           var reIE = new RegExp("MSIE (\\d+\\.\\d+);");  
           reIE.test(userAgent);  
           var fIEVersion = parseFloat(RegExp["$1"]);  
           if(fIEVersion == 7)  
           { return "IE7";}  
           else if(fIEVersion == 8)  
           { return "IE8";}  
           else if(fIEVersion == 9)  
           { return "IE9";}  
           else if(fIEVersion == 10)  
           { return "IE10";}  
           else if(fIEVersion == 11)  
           { return "IE11";}  
           else  
           { return "0"}//IE版本过低  
      }  
else if(isEdge)  
{  
    return "Edge";  
}  
      else  
      {  
          return "-1";//非IE  
      }  
   }