引入 js

<script type="text/javascript" src="//g.alicdn.com/dingding/open-develop/0.8.4/dingtalk.js"></script>

内部代码如下，作用是实现二维码的展现。

<script>
        !function (window, document) {
            function d(a) {
                var e, c = document.createElement("iframe"),
                    d = "https://login.dingtalk.com/login/qrcode.htm?goto=" + a.goto ;
                //console.log(d);
                    d += a.style ? "&style=" + encodeURIComponent(a.style) : "",
                    d += a.href ? "&href=" + a.href : "",
                    c.src = d,
                    c.frameBorder = "0",
                    c.allowTransparency = "true",
                    c.scrolling = "no",
                    c.width =  a.width ? a.width + 'px' : "365px",
                    c.height = a.height ? a.height + 'px' : "400px",
                    e = document.getElementById(a.id),
                    e.innerHTML = "",
                    e.appendChild(c)
            }
            window.DDLogin = d
        }(window, document);
    </script>

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