<a href="javascript:void(0)" data-wid="LECTURE_ID_HERE" data-action="appointment">预约</a>

// ==UserScript==
// @name         东南大学硕博人文讲座预约系统按钮注入工具
// @namespace    http://pc-dos.scp-eq.org/
// @version      0.5-beta
// @description  草泥马的东大硕博人文讲座预约系统
// @author       PC-DOS
// @match        *://ehall.seu.edu.cn/gsapp/sys/jzxxtjapp/*
// @match        *://yjs.seu.edu.cn/gsapp/sys/jzxxtjapp/*
// @icon         https://www.seu.edu.cn/_upload/tpl/09/bc/2492/template2492/favicon.ico
// ==/UserScript==
 
(function() {
    'use strict';
 
    //由于页面动态加载内容，故使用一个2000毫秒的延时执行
    //若网络延迟较大可修改此数值
    setTimeout(()=>{
        MainFunction()
    }, 2000)
 
})();
 
function MainFunction(){
    var IsInDebug = false; //是否为调试版
 
    if (IsInDebug) console.log("FuckSeuLectureAppointmentSystem: Started");
 
    //枚举每一个讲座块
    var arrLecturePosters = document.getElementsByTagName("tbody")[0]; //获取活动海报容器
    if (typeof arrLecturePosters != "undefined"){ //避免相关网页元素没有加载完的情况
        arrLecturePosters = arrLecturePosters.getElementsByTagName("tr"); //获取每一个活动资料
        if (typeof arrLecturePosters != "undefined"){ //避免相关网页元素没有加载完的情况
            if (IsInDebug) console.log("FuckSeuLectureAppointmentSystem: %d lecture posters found.", arrLecturePosters.length);
            for (var i = 0; i < arrLecturePosters.length; i++){ //枚举每一个讲座
                //获取讲座名字
                var sLectureName = arrLecturePosters[i].getElementsByTagName("td")[3].getElementsByTagName("span")[0].innerHTML;
                //审查元素，查找子元素中的所有botton
                var arrButtons = arrLecturePosters[i].getElementsByTagName("a");
                //预设每个讲座poster存在两个button
                if (arrButtons.length >= 2){
                    var btnAppoint = arrButtons[0];
                    var btnLectureInfo = arrButtons[1];
                    if (btnAppoint.getAttribute("style") == null || btnAppoint.getAttribute("style") != "pointer-events: none;color: #bbb;"){
                        //如果讲座已经开放预约，跳过
                        if (IsInDebug) console.log("FuckSeuLectureAppointmentSystem: Lecture \"%s\" has been opened for applications, ignoring...", sLectureName);
                    }
                    else{
                        //如果讲座没有开放预约，进行按钮注入
                        if (IsInDebug) console.log("FuckSeuLectureAppointmentSystem: Injecting the Appointment button of lecture \"%s\" ...", sLectureName);
                        var sLectureId = btnLectureInfo.getAttribute("data-x-wid");
                        //判断是否获取成功
                        if (sLectureId != null){
                            //获取成功，继续注入
                            if (IsInDebug) console.log("FuckSeuLectureAppointmentSystem: ID of lecture \"%s\" is %s.", sLectureName, sLectureId);
                            //替换预约按钮的外部HTML（outerHTML）
                            var htmlInjectedButton = '<a href="javascript:void(0)" data-wid="LECTURE_ID_HERE" data-action="appointment">到点就点我</a>'; //待注入的HTML代码
                            btnAppoint.outerHTML = htmlInjectedButton.replace("LECTURE_ID_HERE", sLectureId);
                        }
                        else{
                            //获取失败，报错
                            console.log("FuckSeuLectureAppointmentSystem: Failed to get ID of lecture \"%s\".", sLectureName);
                        }
                    }
                }
            }
        }
    }
 
    if (IsInDebug) console.log("FuckSeuLectureAppointmentSystem: Operation Finished.");
 
    //注册每秒定时执行，避免误操作后需要刷新页面
    setTimeout(()=>{
        MainFunction()
    }, 500)
}

// ==UserScript==
// @name         东南大学硕博人文讲座预约系统AJAX注入工具
// @namespace    http://pc-dos.scp-eq.org/
// @version      0.1
// @description  草泥马的东大硕博人文讲座预约系统（暴力版）
// @author       PC-DOS
// @match        *://ehall.seu.edu.cn/gsapp/sys/jzxxtjapp/*
// @match        *://yjs.seu.edu.cn/gsapp/sys/jzxxtjapp/*
// @icon         https://www.seu.edu.cn/_upload/tpl/09/bc/2492/template2492/favicon.ico
// ==/UserScript==
 
(function() {
    'use strict';
 
    //由于页面动态加载内容，故使用一个2000毫秒的延时执行
    //若网络延迟较大可修改此数值
    setTimeout(()=>{
        MainFunction()
    }, 2000)
 
})();
 
function MainFunction(){
    //等待依赖项BH_UTILS类库可用
    if (typeof BH_UTILS == "undefined"){
        console.log("BH_UTILS is currently undefined, pending it...");
        setTimeout(()=>{
            MainFunction()
        }, 2000)
        return;
    }
 
    console.log("FuckSeuLectureAppointmentSystemAjax: Start to send appointment requests");
 
    //讲座WID，可以从“查看活动详情”按钮的data-x-wid属性获取
    //这个地方要自己修改
    var sLectureID="0e9e5ea0162140e2b02828523164e8cb";
 
    //构造参数
    var arrParams = {
        HD_WID : sLectureID
    };
 
    //调用页面加载的BH_UTILS库，发送讲座预约AJAX请求
    console.log("FuckSeuLectureAppointmentSystemAjax: Sending appointment request of lecture ID %s", sLectureID);
    BH_UTILS.doAjax('/gsapp/sys/jzxxtjapp/hdyy/yySave.do', {paramJson : JSON.stringify(arrParams)}).done(function (sJsonData){
        console.log(sJsonData); //显示回报数据
        if (sJsonData.success){ //判断是否预约成功
            console.log("FuckSeuLectureAppointmentSystemAjax: Appointment has been made successfully, congratulations!");
            return;
        }
        else{
            //console.log("东大网信亲妈飞天");
            console.log("FuckSeuLectureAppointmentSystemAjax: AJAX request failed, retrying...");
        }
    })
 
    //注册定时执行
    setTimeout(()=>{
        MainFunction()
    }, 500)
}