判断手机，pc方式登录

 <script type="text/javascript">
        function browserDetect() {
            var sUserAgent = navigator.userAgent.toLowerCase();
            var bIsIpad = sUserAgent.match(/ipad/i) == "ipad";
            var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os";
            var bIsMidp = sUserAgent.match(/midp/i) == "midp";
            var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";
            var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb";
            var bIsAndroid = sUserAgent.match(/android/i) == "android";
            var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce";
            var bIsWM = sUserAgent.match(/windows mobile/i) == "windows mobile";
            if (bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM) {
                $(".footer_Phone, .PhoneHeader").show(); //移动
                $(".PhoneHeader").hide();

            } else {
                $(".footer, .logo").show(); //PC
            }
        }
</script>
Or

<script type="text/javascript">
        function IsPC() {
            var userAgentInfo = navigator.userAgent;
            var Agents = new Array("Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod");
            var flag = true;
            for (var v = 0; v < Agents.length; v++) {
                if (userAgentInfo.indexOf(Agents[v]) > 0) { flag = false; break; }
            }
            return flag;
        }
        if (!IsPC()) {
            window.location.href = "/index.html";
        }
    </script>