JS 获取浏览器的名称和版本信息

var a=getBrowser();

console.log(a);

function getBrowser(){

var browser = {

msie: false,

firefox: false,

opera: false,

safari: false,

chrome: false,

netscape: false,

appname: 'unknown',

version: 0

},

ua = window.navigator.userAgent.toLowerCase();

if (/(msie|firefox|opera|chrome|netscape)\D+(\d[\d.]*)/.test(ua)) {

browser[RegExp.$1] = true;

browser.appname = RegExp.$1;

browser.version = RegExp.$2;

} else if (/version\D+(\d[\d.]*).*safari/.test(ua)) {

// safari

browser.safari = true;

browser.appname = 'safari';

browser.version = RegExp.$2;

}

return browser.appname + ' ' + browser.version;

}