index.html


<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>LJWX</title>
</head>
<body>
    <h2 id="hint"></h2>
    <p id="url"></p>
    <script src="https://cdn.jsdelivr.net/npm/jquery@3.6.0/dist/jquery.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
    <script type="text/javascript">
        function getQueryVariable(variable)
        {
               var query = window.location.search.substring(1);
               var vars = query.split("&");
               for (var i=0;i<vars.length;i++) {
                       var pair = vars[i].split("=");
                       if(pair[0] == variable){return pair[1];}
               }
               return(false);
        }
        $(function () {
            var url = getQueryVariable("url");
            if (!url) {
                $("#hint").text("无效URL");
                return;
            }
            var ua = navigator.userAgent.toLowerCase();
            var isWeixin = ua.indexOf('micromessenger') != -1;
            if (!isWeixin) {
                $("#hint").text("正在跳转……");
                window.location.href = url;
            }
            else {
                $("#hint").text("请点击右上角-在默认浏览器中打开，或者复制以下网址在外部浏览器打开：");
                $("#url").text(url);
            }
        });
    </script>
</body>
</html>