JavaScript Judgment of Current Browser Version and IE Version

javascript judge current browser version and determine ie version:

<span style="font-size:18px;">For future use: </span> 

<span style="font-size:18px;">1Determine ie version</span> 

<pre name="code" class="javascript"><span style="font-size:18px;">//js judge Ie version 
function IeVesion() { 
var Sys = {}; 
var ua = navigator.userAgent.toLowerCase(); 
var s; 
(s = ua.match(/msie ([\d.]+)/)) &63; Sys.ie = s[1] : 
(s = ua.match(/firefox\/([\d.]+)/)) &63; Sys.firefox = s[1] : 
(s = ua.match(/chrome\/([\d.]+)/)) &63; Sys.chrome = s[1] : 
(s = ua.match(/opera.([\d.]+)/)) &63; Sys.opera = s[1] : 
(s = ua.match(/version\/([\d.]+.*safari/)) &63; Sys.safari = s[1]: 0; 
var ieversion; 
if (Sys.ie){ 
ieversion = parseInt(Sys.ie); 
if(ieversion<8) { 
alert("Dear user!\n\n The version of Internet Explorer you are currently using is:"+Sys.ie+"); 
setIsTextReadOnly(true); 
} 
} else if (Sys.firefox) { 
ieversion = Sys.firefox; 
//setIsTextReadOnly(true); 
} else if (Sys.chrome) { 
ieversion = Sys.chrome; 
} else if (Sys.opera) { 
ieversion = Sys.opera; 
} else if (Sys.safari) { 
ieversion = Sys.safari; 
} 
}>/span> 

2Determine the type of browser

<span style="font-size:18px;"> 
</span> 

<pre name="code" class="javascript"><span style="font-size:18px;">//JavaScript to judge the browser 
//Browser version judgment 
function getIEVersion() { 
 var OsObject = ""; 
 if(navigator.userAgent.indexOf("MSIE")>0) { 
 return "MSIE"; //IE 
 } 
 return "Firefox"; //Firefox 
 else if(isSafari=navigator.userAgent.indexOf("Safari")>0) { 
 } //return "Safari"; 
 Ipad browser 
 else if(isCamino=navigator.userAgent.indexOf("Camino")>0){ 
 }/)">0){ 
 return "Gecko"; 
 } 
}<//span> 

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