Js determines the browser type and version number

Data Record: Judging the browser type in JS is probably a problem that every developer who edited the page has encountered. Among the many browser products, many brands of IE, Firefox, Opera, and Safari have different standards. Therefore, you often need to record them based on different browsers or even the same license information: judging the browser type in JS is probably a problem that every developer who edited the page has encountered. Among many browser products, IE, Firefox, Opera, Safari ........ many brands have different standards. Therefore, you often need to perform different operations based on different browsers or even different versions of the same browser. Therefore, it is very important to know the browser's judgment method. The following lists common judgment methods: 1. Determine if the browser is IE document. all? 'Ie': 'others ': the document. all value in IE is 1, and the value in other browsers is 0. navigator. userAgent. indexOf ("MSIE")> 0? 'Ie': 'others ': navigator. userAgent indicates the user agent information. Navigator. appName. indexOf ("Microsoft ")! =-1? 'Ie': 'others ': navigator. appName indicates the browser name. 2. Determine the IE version navigator. appVersion. match (/6./I) = "6 ."? 'Ie6': 'Other version': if it is known to be an IE browser, you can use this method to determine whether it is IE6; navigator. userAgent. indexOf ("MSIE 6.0")> 0? 'Ie7': 'Other version': Same as above; navigator. appVersion. match (/7./I) = "7 ."? 'Ie7': 'Other version': if it is known to be an IE browser, you can use this method to determine whether it is IE7; navigator. userAgent. indexOf ("MSIE 7.0")> 0? 'Ie7': 'Other version': Same as above; navigator. appVersion. match (/8./I) = "8 ."? 'Ie8': 'Other version': if it is known to be an IE browser, you can use this method to determine whether it is IE8; navigator. userAgent. indexOf ("MSIE 8.0")> 0? 'Ie8': 'Other version': Same as above. 3. JS: Get browser information. browser code name: navigator. appCodeName browser name: navigator. appName browser version: navigator. appVersion supports Java: navigator. javaEnabled () MIME type (array): navigator. mimeTypes System Platform: navigator. platform Plug-in (array): navigator. plugins User Agent: navigator. userAgent DEMO: Js Code