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function input(info){
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//输入
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var s = prompt(info, "");
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if(s == "" || s == null) return false;
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return s;
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}
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function setNo(){
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//设置课程信息
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classNo = input("请输入课程序号（表格第一列）")
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courseNo= input("请输入课程代码（表格第二列）")
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document.getElementsByName("electableLesson.no")[0].value = classNo;
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document.getElementsByName("electableLesson.course.code")[0].value = courseNo;
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document.getElementsByName("electableLesson.course.name")[0].value = "";
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document.getElementsByName("electableLesson.teachClass")[0].value = "";
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document.getElementsByName("electableLesson.course.credits")[0].value = "";
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document.getElementsByName("electableLesson.teachers")[0].value = "";
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document.getElementsByName("electableLesson.campus.name")[0].value = "";
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if(classNo && courseNo){ //输入正确
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$("#electableLessonList_filter_submit").click();
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setTimeout(function(){
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if($("#electableLessonList_data").find("a[operator=ELECTION]").length != 1){
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alert("无法使用本脚本，请亲手动选课吧。。。\n原因：根据课程序号和课程代码选出了多个课程。。")
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return false;
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}
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else{
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alert("刷课即将开始，每隔" + refresh_time + "秒我会帮你看看还有没有名额\n为了避免选错，请注意【可选课程页】的课程是否正确。请勿完全依赖本工具！\n刷课状态会在控制台的console上显示。请低调使用\n如果控制台大量报错，请检查登陆状态\nTip：同时刷多门课可以开多个页面刷")
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gogogo();
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}
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}, 500)
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}else{
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alert("输入有误！");
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return false
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}
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}
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function gogogo(){
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//选课gogogo！
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$("#electableLessonList_filter_submit").click(); //模拟点击查询
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setTimeout(function(){
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try{
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remain = parseInt($("#electableLessonList_data").find("td[class=stdCount]")[0].innerHTML);
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if(remain <= 0){
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//没有剩余名额
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console.log("课程人数已满（" + remain + "），" + refresh_time + "秒后再试");
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setTimeout("gogogo()", refresh_time * 1000 - 200)
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}else{
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console.log("有了");
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//模拟点击选课按钮
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$("#electableLessonList_data").find("a[operator=ELECTION]").click()
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//恢复confirm和alert
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window.confirm = _tmp_confirm
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window.alert = _tmp_alert
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}
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}catch(err){
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console.log(err);
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console.log("出错了，不过没关系，刷课还在继续");
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setTimeout("gogogo()", refresh_time * 1000 - 200)
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}
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}, 200) //这里的200毫秒是request时间，因为没有回调，所以写死了200
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}
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//屏蔽教务系统的错误alert和确认comfirm
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_tmp_alert = window.alert
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window.alert = function () {
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return true;
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};
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_tmp_confirm = window.confirm;
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window.confirm = function () {
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return true;
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};
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refresh_time = 1.1; //刷课间隔，可以手动修改，最低为1
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setNo();
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