JS获取浏览器信息

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function getExplore(){
 var Sys = {};  
 var ua = navigator.userAgent.toLowerCase();  
 var s;  
 (s = ua.match(/rv:([d.]+)) like gecko/)) ? Sys.ie = s[1] :
 (s = ua.match(/msie ([d.]+)/)) ? Sys.ie = s[1] :  
 (s = ua.match(/edge/([d.]+)/)) ? Sys.edge = s[1] :
 (s = ua.match(/firefox/([d.]+)/)) ? Sys.firefox = s[1] :  
 (s = ua.match(/(?:opera|opr).([d.]+)/)) ? Sys.opera = s[1] :  
 (s = ua.match(/chrome/([d.]+)/)) ? Sys.chrome = s[1] :  
 (s = ua.match(/version/([d.]+).*safari/)) ? Sys.safari = s[1] : 0;  
  // 根据关系进行判断
 if (Sys.ie) return ('IE: ' + Sys.ie);  
 if (Sys.edge) return ('EDGE: ' + Sys.edge);
 if (Sys.firefox) return ('Firefox: ' + Sys.firefox);  
 if (Sys.chrome) return ('Chrome: ' + Sys.chrome);  
 if (Sys.opera) return ('Opera: ' + Sys.opera);  
 if (Sys.safari) return ('Safari: ' + Sys.safari);
 return 'Unkonwn';
}


function getExploreName(){
   var userAgent = navigator.userAgent;
   if(userAgent.indexOf("Opera") > -1 || userAgent.indexOf("OPR") > -1){
     return 'Opera';
   }
   else if(userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1){
     return 'IE';
   }
   else if(userAgent.indexOf("Edge") > -1){
      return 'Edge';
   }
   else if(userAgent.indexOf("Firefox") > -1){
      return 'Firefox';
   }
   else if(userAgent.indexOf("Safari") > -1 && userAgent.indexOf("Chrome") == -1){
     return 'Safari';
   }
   else if(userAgent.indexOf("Chrome") > -1 && userAgent.indexOf("Safari") > -1){
      return 'Chrome';
   }
   else if(!!window.ActiveXObject || "ActiveXObject" in window){
      return 'IE>=11';
   }
   else{
    return 'Unkonwn';
   }
}

navigator对象