JS获取当前使用的浏览器名字以及版本号实现方法

function getBrowserInfo(){var agent = navigator.userAgent.toLowerCase() ;var regStr_ie = /msie [/d.]+;/gi ;var regStr_ff = /firefox//[/d.]+/givar regStr_chrome = /chrome//[/d.]+/gi ;var regStr_saf = /safari//[/d.]+/gi ;//IEif(agent.indexOf("msie") > 0){return agent.match(regStr_ie) ;}//firefoxif(agent.indexOf("firefox") > 0){return agent.match(regStr_ff) ;}//Safariif(agent.indexOf("safari") > 0 && agent.indexOf("chrome") < 0){return agent.match(regStr_saf) ;}//Chromeif(agent.indexOf("chrome") > 0){return agent.match(regStr_chrome) ;}}

var browser = getBrowserInfo() ;//alert(browser); var verinfo = (browser+"").replace(/[^0-9.]/ig,"");