JS to determine browser version and browser kernel method _javascript Tips

This article is an example of how JS determines the browser version and the browser kernel. Share to everyone for your reference. The implementation methods are as follows:

Copy Code code as follows:

if (!browser.ie &&!browser.mac) {
var UA = Navigator.userAgent.toLowerCase (). toString ();
To determine if the IE kernel is not a version of IE
if ((Ua.indexof (' 360ee ') >-1) | | (Ua.indexof (' 360se ') >-1) | | (Ua.indexof (' SE ') >-1) | | (Ua.indexof (' aoyou ') >-1)
|| (Ua.indexof (' TheWorld ') >-1) | | (Ua.indexof (' Worldchrome ') >-1) | | (Ua.indexof (' Greenbrowser ') >-1)
|| (Ua.indexof (' Baidu ') >-1) | | (Ua.indexof (' Qqbrowser ') >-1)) {
Yes, switch compatibility mode.
window.open ("publicpage/point-se.aspx");
}
else {
If not, we recommend that you change your browser
Alert (' proposed switch to IE kernel browser ');
}
}
else {
Determine the version model of IE
if ((browser.version = && Browser.ie10compat) | | (browser.version = && browser.ie11compat)) {
window.open ("publicpage/point.aspx");
}
/*
* @desc to determine the browser version and the browser kernel
* @author wangyanling
* @date July 4, 2014
*/
var browser = function () {
var agent = Navigator.userAgent.toLowerCase (),
Opera = Window.opera,
Browser = {
Detects if the current browser is IE
ie:/(MSIE\S|TRIDENT.*RV:) ([\w.] +)/.test (agent),

Detects if the current browser is opera
Opera: (!!!) Opera && opera.version),

Detects if the current browser is a WebKit kernel browser
WebKit: (Agent.indexof (' applewebkit/') >-1),

Detects if the current browser is running under the Mac platform
Mac: (Agent.indexof (' Macintosh ') >-1),

Detects if the current browser is under "weird mode"
Quirks: (Document.compatmode = = ' Backcompat ')
};

Detects if the current browser kernel is a gecko kernel
Browser.gecko = (Navigator.product = = ' Gecko ' &&!browser.webkit &&!browser.opera &&! browser.ie);

var version = 0;

Internet Explorer 6.0+
if (browser.ie) {
var V1 = Agent.match (/(?: msie\s) ([\w.] +))/);
var v2 = Agent.match (/(?: Trident.*rv: ([\w.] +))/);
if (v1 && v2 && v1[1] && v2[1]) {
Version = Math.max (v1[1] * 1, v2[1] * 1);
else if (v1 && v1[1]) {
Version = v1[1] * 1;
else if (v2 && v2[1]) {
Version = v2[1] * 1;
} else {
Version = 0;
}

Detect if Browser mode is IE11 compatibility mode
Browser.ie11compat = Document.documentmode = = 11;

Detect if Browser mode is IE9 compatibility mode
Browser.ie9compat = Document.documentmode = = 9;

Detect if Browser mode is IE10 compatibility mode
Browser.ie10compat = Document.documentmode = = 10;

Detect if the browser is a IE8 browser
BROWSER.IE8 =!! Document.documentmode;

Detect if Browser mode is IE8 compatibility mode
Browser.ie8compat = Document.documentmode = = 8;

Detect if Browser mode is IE7 compatibility mode
Browser.ie7compat = ((Version = = 7 &&!document.documentmode) | | document.documentmode = = 7);

Detect if Browser mode is IE6 mode or weird mode
Browser.ie6compat = (Version < 7 | | browser.quirks);

Browser.ie9above = version > 8;

Browser.ie9below = version < 9;
}

Gecko.
if (Browser.gecko) {
var geckorelease = Agent.match (/rv: ([\d\.] +)/);
if (geckorelease) {
Geckorelease = Geckorelease[1].split ('. ');
Version = Geckorelease[0] * 10000 + (Geckorelease[1] | | 0) * + (geckorelease[2) | | 0) * 1;
}
}

Detects if the current browser is chrome and, if so, returns the large version of Chrome
if (/chrome\/(\d+\.\d)/i.test (agent)) {
Browser.chrome = +regexp[' \x241 '];
}

Detects if the current browser is safari and, if so, returns the large version number of Safari
if (/(\d+\.\d)? (?: \. \d)? \s+safari\/? (\d+\.\d+)?/i.test (Agent) &&!/chrome/i.test (agent)) {
Browser.safari = + (regexp[' \x241 ') | | regexp[' \x242 ']);
}

Opera 9.50+
if (Browser.opera)
Version = Parsefloat (Opera.version ());

WebKit 522+ (Safari 3+)
if (Browser.webkit)
Version = parsefloat (Agent.match (/applewebkit\/(\d+)/) [1]);

Detects the current browser version number
Browser.version = version;

return browser;
}();

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