一段代码即可解决：
getBrowser : function(){
var browser = {
msie: false, firefox: false, opera: false, safari: false,
chrome: false, netscape: false, appname: 'unknown', version: 0
},
userAgent = window.navigator.userAgent.toLowerCase();
if (/(msie|firefox|opera|chrome|netscape)\D+(\d[\d.]*)/.test( userAgent ) ){
browser[RegExp.$1] = true;
browser.appname = RegExp.$1;
browser.version = RegExp.$2;
} else if (/version\D+(\d[\d.]*).*safari/.test( userAgent ) ){ // safari
browser.safari = true;
browser.appname = 'safari';
browser.version = RegExp.$2;
}
return browser.appname + browser.version;
}
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