JS Detailed Example of Determining Browser Type and Version

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Today JS is used to determine the browser type, so I organized it systematically to facilitate later use.

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/*

* Description: Determine browser information

* Written by: LittleQiang_w

* Date: 2016.1.5

* Version: V1.1

*/

// Determine the current browsing type

function BrowserType()

{

var userAgent = navigator.userAgent; //Get the browser’s userAgent string

var isOpera = userAgent.indexOf( "Opera") > -1; //Determine whether the Opera browser is the browser

var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //Determine whether it is IE browser

var isEdge = userAgent.indexOf("Windows NT 6.1; Trident/7.0;") > -1 && !isIE; //Determine whether it is IE's Edge Browser

var isFF = userAgent.indexOf("Firefox") > -1; //Determine whether Firefox browser

var isSafari = userAgent.indexOf("Safari") > -1 && userAgent.indexOf("Chrome") == -1; //Determine whether Safari browser

var isChrome = userAgent.indexOf("Chrome") > -1 && userAgent.indexOf(" Safari") > -1; //Determine the Chrome browser

if (isIE)

{

var reIE = new RegExp(" MSIE (\\d+\\.\\d+);");

reIE.test(userAgent);

var fIEVersion = parseFloat(RegExp["$1"]);

}

 "IE10";}

else if(fIEVersion == 11)

{ return "IE11";}

else

{ return "0" }//IE version is too low }

}//isIE end

) { return "Opera";}

if (isSafari) { return "Safari";}

if (isChrome) { return "Chrome";}

if (isEdge) { return "Edge";}

}//myBrowser() end

//Determine whether it is an IE browser

function isIE()

{

var userAgent = navigator.userAgent; //Get the browser's userAgent string

var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //Determine whether it is an IE browser

if(isIE)

{

return "1";

else }

# return "-1";

Including Edge browser

function IEVersion()

{

var userAgent = navigator.userAgent; //Get the browser’s userAgent string

var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; // Determine whether IE browser

var isEdge = userAgent.indexOf ("Windows NT 6.1; Trident/7.0;") > -1 && !isIE; // Determine if IE is an Edge browser

if(isIE)

{

VAR Reie = New Regexp ("msie (\\ d+\\. \\ d+);");

## Reie.test (useragent);

var footVersion = 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

";

}

else

{

return "-1";//Non-IE

}

}

The above code passed the test and is available!

But there is a problem, that is, IE5 and IE7 browsers cannot be distinguished for the time being. The following is the information of userAgent under IE5 and IE7; through userAgent, it is found that IE5 and IE7 cannot be correctly distinguished by simply using the above method. Looking forward to the solution to this problem! ! !

IE5: userAgent "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; InfoPath.2; .NET4.0E)"

IE7: userAgent "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/7.0; SLCC2; . NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; InfoPath.2; .NET4.0E)"

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