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大家好,我需要一个问题,有一个名为提交的按钮,我想当我单击该按钮时,会出现 reCAPTCHA 表单,但现在,我必须单击三次才能显示 reCAPTCHA 表单。这是我的问题。从现在开始谢谢你。所有 HTML 代码:

<html>
    <head>
        <title>reCAPTCHA demo: Simple page</title>
        <script src="https://www.google.com/recaptcha/api.js" async defer></script>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
        <script type="text/javascript">

            function onSubmit(token) {
                alert(token)
            }
        function onExpired() {
            alert("onExpired")
        }
        function onError() {
            alert("onError")
        }
        </script>
    </head>
    <body>
        <form id='demo-form' action="?" method="POST">
            <button id ="btnSubmit" class="g-recaptcha" data-sitekey="mysitekey here" data-callback='onSubmit' data-expired-callback='onExpired' error-callback='onError'  >Submit</button>
            <br/>
        </form>

    </body>
</html>
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