<script src="https://cdn.kgcaptcha.com/captcha.js?appid=xxx"></script>
<script>
kg.captcha({
    // 绑定弹窗按钮
    button: "#captchaButton",
    // 验证成功事务处理
    success: function (e) {
        // 验证成功，直接提交表单
        // form1.submit();
        console.log(e);
    },
    // 验证失败事务处理
    failure: function (e) {
        console.log(e);
    },
    // 点击刷新按钮时触发
    refresh: function (e) {
        console.log(e);
    }
});
</script>
<a id="captchaButton">点击弹出验证窗口</a>