JS脚本实现定时到网站上签到/签退功能
之前介绍过使用temperMonkey屏蔽CSDN广告的方法,主要就是要针对性地分析网站结构,然后用代码去改变或者操作DOM。今天也一样,我们需要观察网页结构,找到我们要操作的按钮,触发他的click事件就可以了。下面以公司打卡签到的网站为例,做一些坏坏的事情。本文读者最好有一定的HTML和JavaScript基础。
首先,想象一下你去签到需要做什么:
打开网站 登陆 点击“签到”按钮然后每一步我们都可以让代码帮我们去做。
0. 如何定时
这段代码是核心,就是根据当前时间和设定的时间做差值,来确定定时器的值看懂这段代码,后面的就都容易了。都是在利用定时器触发callback。
// user settingconst SIGN_IN_TIME = '09:30:00'; // 签到时间const SIGN_OUT_TIME = '20:00:00'; // 签退时间// code implementationlogTime('code start running');const now = new Date();const today = now.getFullYear() + '-' + (now.getMonth() + 1) + '-' + now.getDate();var signInTime = +new Date(`${today} ${SIGN_IN_TIME}`);logTime('signInTime', new Date(signInTime));var signOutTime = +new Date(`${today} ${SIGN_OUT_TIME}`);logTime('signOutTime', new Date(signOutTime));// diff in or outif (now > signInTime && now < signOutTime) { // ready to sign out for today console.log('Seconds to sign out for today: ' + (signOutTime - now) / 1000); setTimeout(callback, signOutTime - now);} else { // ready to sign in for tomorrow signInTime = +signInTime + 60 * 60 * 24 * 1000; console.log('Seconds to sign in for tomorrow: ' + (signInTime - now) / 1000); setTimeout(callback, signInTime - now);}function logTime(str, time = new Date()) { console.log(`${str} -> ${time.getHours()}:${time.getMinutes()}:${time.getSeconds()}`);}
1. 定时自动打开网站
因为大多数网站都有,“长时间未操作-自动退出”的设置。所以我们要在需要打卡的时候再打开网站。在电脑本地跑一个程序,使用定时器。这里跑一个node程序:
const open = require(’open’);logTime('Start Runing');// user settingconst SIGN_IN_TIME = '09:30:00';const SIGN_OUT_TIME = '20:20:00';// code implementationconst openBrowser = async () => { await open(’http://172.10.80.42’);};logTime('code start running');const now = new Date();const today = now.getFullYear() + '-' + (now.getMonth() + 1) + '-' + now.getDate();var signInTime = +new Date(`${today} ${SIGN_IN_TIME}`);logTime('signInTime', new Date(signInTime));var signOutTime = +new Date(`${today} ${SIGN_OUT_TIME}`);logTime('signOutTime', new Date(signOutTime));// diff in or outif (now > signInTime && now < signOutTime) { // ready to sign out for today console.log('Seconds to sign out for today: ' + (signOutTime - now) / 1000); setTimeout(openBrowser, signOutTime - now);} else { // ready to sign in for tomorrow signInTime = +signInTime + 60 * 60 * 24 * 1000; console.log('Seconds to sign in for tomorrow: ' + (signInTime - now) / 1000); setTimeout(openBrowser, signInTime - now);}function logTime(str, time = new Date()) { console.log(`${str} -> ${time.getHours()}:${time.getMinutes()}:${time.getSeconds()}`);}
2. 自动登录
这个重点还是在于找到需要填入内容的DOM元素
(function() { ’use strict’; // login document.querySelector('#loginid').value = '用户名'; document.querySelector('#userpassword').value = '密码'; document.querySelector('#login').click();})();
3. 定时点击按钮
这一步最重要的是要准确找到按钮,检查元素慢慢查找吧。其次,设定好签到和签退的时间,只有固定时间才会自动签到,防止每次登陆进来自动签到或签退,这样太频繁被发现。
(function() { ’use strict’; // user setting const SIGN_IN_TIME = '09:00:00'; const SIGN_OUT_TIME = '21:00:00'; // code implementation logTime('code start running'); const now = new Date(); const today = now.getFullYear()+'-'+(now.getMonth()+1)+'-'+now.getDate(); var signInTime = +new Date(`${today} ${SIGN_IN_TIME}`); logTime('signInTime', new Date(signInTime)); var signOutTime = +new Date(`${today} ${SIGN_OUT_TIME}`); logTime('signOutTime', new Date(signOutTime)); // diff in or out if(now > signInTime && now < signOutTime) { // ready to sign out for today console.log('Seconds to sign out for today: ' + (signOutTime - now)/1000); setTimeout(signInorSignOut, signOutTime - now); } else { // ready to sign in for tomorrow signInTime = +signInTime + 60 * 60 * 24 * 1000; console.log('Seconds to sign in for tomorrow: ' + (signInTime - now)/1000); setTimeout(signInorSignOut, signInTime - now); } // signInorSignOut function signInorSignOut(){ logTime(`signInButton clicked!`); // 重点就在这儿了,找到网站的签到按钮#signInButton,并触发他的点击事件 document.querySelector('#signInButton').click(); } function logTime(str, time=new Date()){ console.log(`${str} -> ${time.getHours()}:${time.getMinutes()}:${time.getSeconds()}`); }})();
4. 结束
一套操作,打完收工。每天下班的时候,不管是提前溜还是晚点到。记得本地开一下程序:
node timer.js
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