function fnSubmit() {
    let find_email = $('#find_email').val();
    if (!find_email.length) {
        alert(alert_msg);
    } else {
        $.ajax({
            dataType: "json",
            type: "post",
            data: {
                "find_email": find_email,
            },
            url: "/find_pw",
            success: function(data) {
                if (data.result) {
                    side_close('#findPwWrap');
                    side_open('#findPwStep2Wrap');
                } else {
                    alert(data.msg);
                }
            }
        });
    }
}