如何判断移动设备或pc

var userAgentInfo = navigator.userAgent;
    if  (userAgentInfo.indexOf("Android") > 0 || userAgentInfo.indexOf("iPhone") > 0 || userAgentInfo.indexOf("SymbianOS") > 0 || userAgentInfo.indexOf("Windows Phone") > 0 || userAgentInfo.indexOf("iPod") > 0 || userAgentInfo.indexOf("iPad") > 0)
    {
        window.location.href = "/wap/index.html";
    }else {
        }