js判断是否pc端

function IsPC() {
       var userAgentInfo = navigator.userAgent;
       var Agents = ['Android', 'iPhone',
           'SymbianOS', 'Windows Phone',
           'iPad', 'iPod'
       ];
       var flag = true;
       for (var i = 0; i < Agents.length; i++) {
           if (userAgentInfo.indexOf(Agents[i]) != -1) {
               flag = false;
               break;
           }
       }
       return flag;
   }