一个按钮触发另一个按钮

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<!DOCTYPE html>
< html>

    <head>
        <meta charset="utf-8" />
        <title></title>
        <style type="text/css">
            .hide {
                display: none;
            }

            .d1 {
                width: 400px;
                height: 600px;
                margin: 100px auto;
                text-align: center;
            }

            .d1 a {
                color: #000;
                text-decoration: none;
            }
        </style>
        <script type="text/javascript">
            var a1 = document.getElementsByTagName("a");
            window.onload = function() {
                a1[0].onclick = function() {
                    console.log(1);
                    var evt = document.createEvent("MouseEvents");
                    evt.initEvent("click", true, true);
                    document.getElementById("gf").dispatchEvent(evt);
                }
            }
        </script>
    </head>

</div>
</body>

</html>

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