JS Check Browser type and version number

The lowercase information for the UserAgent property of the Navigator object is obtained first, and then the value is inferred from the regular table.

var Sys = {};var ua = Navigator.userAgent.toLowerCase (); var s;var scan; (s = Ua.match (/msie ([\d.] +)/)) ? sys.ie = S[1]: (s = Ua.match (/firefox\/([\d.] +)/)) ? Sys.firefox = S[1]: (s = Ua.match (/chrome\/([\d.] +)/)) ? Sys.chrome = S[1]: (s = Ua.match (/opera. ( [\d.] +)/)) ? Sys.opera = S[1]: (s = Ua.match (/version\/([\d.] +). *safari/))? Sys.safari = s[1]: 0;//to test if (sys.ie) {scan = "ie kernel you use" + sys.ie + "browser";} if (sys.firefox) {scan = "You are using the Firefox kernel" + sys.firefox + "browser";} if (sys.chrome) {scan = "You are using the chrome kernel" + sys.chrome + "browser";} if (sys.opera) {scan = "You are using the Opera kernel" + Sys.opera + "browser";} if (Sys.safari) {scan = "You are using the Safari kernel" + Sys.safari + "browser";} Alert (scan)

Itmyhome

JS Check Browser type and version number