js判断浏览器类型
function userBrowser(){ var browserName=navigator.userAgent.toLowerCase(); if(/msie/i.test(browserName) && !/opera/.test(browserName)){ alert("IE"); return ; }else if(/firefox/i.test(browserName)){ alert("Firefox"); return ; }else if(/chrome/i.test(browserName) && /webkit/i.test(browserName) && /mozilla/i.test(browserName)){ alert("Chrome"); return ; }else if(/opera/i.test(browserName)){ alert("Opera"); return ; }else if(/webkit/i.test(browserName) &&!(/chrome/i.test(browserName) && /webkit/i.test(browserName) && /mozilla/i.test(browserName))){ alert("Safari"); return ; }else{ alert("unKnow"); } }