Detailed description of window. navigator in javascript Host object, javascriptnavigator

Detailed description of window. navigator in javascript Host object, javascriptnavigator

Window. navigator is an object that reflects the information about the browser and its functions.

// Check the browser version information function getBrowserInfo () {var Sys ={}; var ua = window. navigator. userAgent. toLowerCase (); var re =/(msie | firefox | chrome | opera | version ). *? ([\ D.] +)/; var m = ua. match (re); Sys. browser = m [1]. replace (/version/, "'safari"); Sys. ver = m [2]; return Sys;} var BomInfo = getBrowserInfo; console. log (BomInfo ());

How can I determine whether it is ie?

var navigatorName = "Microsoft Internet Explorer"; var isIE = false;  if( window.navigator.appName == navigatorName ){    isIE = true;    alert("ie")  }else{    alert("not ie")  }  

Another method is as follows:

If (window. addEventListener) {alert ("not ie");} else if (window. attachEvent) {alert ("is ie");} else {alert ("this happens when browsers of earlier versions that do not support DHTML are generally supported now )")}

Determine the device type:

Function browerType () {var sUserAgent = navigator. userAgent. toLowerCase (); // set the browser's user proxy to lowercase, and then match var isIpad = sUserAgent. match (/ipad/I) = "ipad"; // or use the indexOf method to match var isIphoneOs = sUserAgent. match (/iphone OS/I) = "iphone"; var isMidp = sUserAgent. match (/midp/I) = "midp"; // mobile information device description MIDP is a set of Java application programming interfaces. It is applicable to the Saipan system var isUc7 = sUserAgent. match (/rv: 1.2.3.4/I) = "rv: 1.2.3.4"; // CVS label var isUc = sUserAgent. match (/ucweb/I) = "ucweb"; var isAndroid = sUserAgent. match (/android/I) = "android"; var isCe = sUserAgent. match (/windows ce/I) = "windows ce"; var isWM = sUserAgent. match (/windows mobil/I) = "windows mobil"; if (isIpad | isIphoneOs | isMidp | isUc7 | isUc | isAndroid | isCe | isWM) {alert ('this device is a mobile device'); // do something} else {alert ('this device is a PC device '); // do something} browerType ();

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