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<p>我一直在嘗試在我的小項(xiàng)目中實(shí)現(xiàn)reCaptcha。我在登錄驗(yàn)證表單部分下面添加了兩個(gè)腳本，reCaptcha工作正常，但我想刪除一個(gè)reCaptcha的“提交”按鈕，并將其鏈接到“登錄”按鈕。有人能幫我嗎？</p> <pre class="brush:php;toolbar:false;"></div> <div id="content"> <form action="Validation" method="post"> <table> <tr><td>用戶名：</td><td><input type="text" name="username" value="<%=user%>" /></td></tr> <tr><td>密碼：</td><td><input type="text" name="password" value="<%=pass%>"/></td></tr> <tr><td><input type="submit" name="Login" value="登錄"/></td></tr> </table> </form> <form method="post" onsubmit="return submitUserForm();"> <div class="g-recaptcha" data-sitekey="My site key" data-callback="verifyCaptcha"></div> <div id="g-recaptcha-error"></div> <input type="submit" name="submit" value="提交" /> </form> <script src='https://www.google.com/recaptcha/api.js'></script> <script> var recaptcha_response = ''; function submitUserForm() { if(recaptcha_response.length == 0) { document.getElementById('g-recaptcha-error').innerHTML = '<span style="color:red;">此字段為必填項(xiàng)。</span>'; return false; } return true; } function verifyCaptcha(token) { recaptcha_response = token; document.getElementById('g-recaptcha-error').innerHTML = ''; } </script></pre> <p>我嘗試了一些方法，但對(duì)我沒有起作用。</p>

</div>
        
        <div id="content">
<form action="Validation" method="post" onsubmit="return submitUserForm();">
    <table> 
        <tr><td>用戶名：</td><td><input type="text" name="username" value="<%=username%>" /></td></tr>
        <tr><td>密碼：</td><td><input type="password" name="password" value="<%=password%>"/></td></tr>
        
        <tr >
            <td colspan="2">
            <div class="g-recaptcha" data-sitekey="我的站點(diǎn)密鑰" data-callback="verifyCaptcha"></div>
            <div id="g-recaptcha-error"></div>
            </td>
        </tr>
        <tr><td><input type="submit" name="Login" value="登錄"/></td></tr>
    </table>  
        
</form>
<script src='https://www.google.com/recaptcha/api.js'></script>
<script>
var recaptcha_response = '';
function submitUserForm() {
    if(recaptcha_response.length === 0) {
        document.getElementById('g-recaptcha-error').innerHTML = '<span style="color:red;">此字段為必填項(xiàng)。</span>';
        return false;
    }
    return true;
}
 
function verifyCaptcha(token) {
    recaptcha_response = token;
    document.getElementById('g-recaptcha-error').innerHTML = '';
}
</script>