一键评教案例分析

功能

• 一键评教（仅限普通课程）
• 手动提交，请人工确认

使用教程

1. 打开Chrome浏览器登录评教界面
2. F12呼出开发人员工具
3. 选择控制台
4. 粘贴代码
5. 回车

学习思路

分析页面框架

F12审查元素

经验告诉我：现在好多网页都是内部含框架，直接写代码肯定会报错

分析网页框架，发现有两个嵌套框架，所以我们需要先进入框架2中

iframe = document.getElementById("main");//进入框架一
iframe = iframe.contentWindow.document.getElementById("examTableFrame");//进入框架二
//调用时  document>iframe.contentWindow.document

contentDocument 属性

能够以 HTML 对象来返回 iframe 中的文档，简单来说就是将主document替换为框架内部的document

菜鸟论坛详解，但是例子不太好（太高深了看不懂），所以自己总结了上述这个例子进行理解

分析事件

分析网页元素

// 选项ID>checkbox类型>发现可点击onclick>调用函数
//所以只用模拟点击事件即可（click）
// 文本框>text类型>使用Value方法赋值文本框内容
// 单选卡>radio类型>使用checked方法模拟勾选

模拟事件

具体不细讲，主要是分为定位元素+事件

此处要特别主要document应替换为iframe.contentWindow.document，我可能会写一篇常见的JS事件方法

输入文字

同上，通过给元素的value赋值即可

可优化之处

夸夸老师

可以从更多的方面夸老师，比如写点随机语句啥的

自动提交

也能做，就是怕有时候定位出问题，所以手动点击确认一下

连续提交

Emma，能做，但是不敢做

CV工程师参考文献

Checkbox菜鸟论坛

无意中发现的快速导出JS路径

源代码

/*Obfuscated by JShaman.com*/iframe=document['getElementById']('main');iframe=iframe['contentWindow']['document']['getElementById']('examTableFrame');iframe['contentWindow']['document']['querySelector']('#\x5c32\x201\x20>\x20td:nth-child(8)\x20>\x20input[type=checkbox]')['click']();try{iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(7)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(8)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(9)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(10)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(11)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(12)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(13)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(14)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();}catch{x=0x24791^0x2479b;}try{iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(7)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(8)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(9)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(10)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(11)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(12)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(13)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(14)\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();}catch{x=0xdaaeb^0xdaae1;}iframe['contentWindow']['document']['querySelector']('#\x5c32\x202\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('#\x5c32\x203\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('#\x5c32\x204\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('#\x5c32\x205\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('#\x5c32\x206\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('#\x5c32\x207\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('#\x5c32\x208\x20>\x20td:nth-child(9)\x20>\x20input[type=checkbox]')['click']();iframe['contentWindow']['document']['querySelector']('#fourthcb_1')['value']='教学认真';iframe['contentWindow']['document']['querySelector']('#fourthcb_2')['value']='无';iframe['contentWindow']['document']['querySelector']('#fourthcb_3')['value']='系统性高';iframe['contentWindow']['document']['querySelector']('#fourthcb_4')['value']='无';try{try{iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(22)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(23)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}catch(_0x322998){iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(22)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(23)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}}catch{}try{try{iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(23)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(24)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}catch(_0x14837c){iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(23)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(24)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}}catch{}try{try{iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(24)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(25)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}catch(_0x25b128){iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(24)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(25)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}}catch{}try{try{iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(25)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(26)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}catch(_0x27f5af){iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(25)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(26)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}}catch{}try{try{iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(26)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(27)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}catch(_0x303f8c){iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(26)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(27)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}}catch{}try{try{iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(27)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(5)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(28)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}catch(_0x16e474){iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(27)\x20>\x20td:nth-child(2)\x20>\x20input[type=radio]:nth-child(1)')['checked']=!![];iframe['contentWindow']['document']['querySelector']('body\x20>\x20div:nth-child(3)\x20>\x20form\x20>\x20table\x20>\x20tbody\x20>\x20tr:nth-child(28)\x20>\x20td:nth-child(8)\x20>\x20b\x20>\x20input[type=checkbox]')['click']();}}catch{}

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