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JS腳本實(shí)現(xiàn)定時(shí)到網(wǎng)站上簽到/簽退功能

更新時(shí)間：2020年04月22日 14:02:08 作者：等時(shí)鐘成長

這篇文章主要介紹了JS腳本實(shí)現(xiàn)定時(shí)到網(wǎng)站上簽到/簽退功能，本文通過實(shí)例代碼給大家介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或工作具有一定的參考借鑒價(jià)值,需要的朋友可以參考下

之前介紹過使用temperMonkey屏蔽CSDN廣告的方法，主要就是要針對(duì)性地分析網(wǎng)站結(jié)構(gòu)，然后用代碼去改變或者操作DOM。今天也一樣，我們需要觀察網(wǎng)頁結(jié)構(gòu)，找到我們要操作的按鈕，觸發(fā)他的click事件就可以了。下面以公司打卡簽到的網(wǎng)站為例，做一些壞壞的事情。本文讀者最好有一定的HTML和JavaScript基礎(chǔ)。

首先，想象一下你去簽到需要做什么：

打開網(wǎng)站
登陸
點(diǎn)擊“簽到”按鈕

然后每一步我們都可以讓代碼幫我們?nèi)プ觥?/p>

0. 如何定時(shí)

這段代碼是核心，就是根據(jù)當(dāng)前時(shí)間和設(shè)定的時(shí)間做差值，來確定定時(shí)器的值
看懂這段代碼，后面的就都容易了。都是在利用定時(shí)器觸發(fā)callback。

// user setting
const SIGN_IN_TIME = "09:30:00"; // 簽到時(shí)間
const SIGN_OUT_TIME = "20:00:00"; // 簽退時(shí)間

// 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(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. 定時(shí)自動(dòng)打開網(wǎng)站

因?yàn)榇蠖鄶?shù)網(wǎng)站都有，“長時(shí)間未操作-自動(dòng)退出”的設(shè)置。所以我們要在需要打卡的時(shí)候再打開網(wǎng)站。
在電腦本地跑一個(gè)程序，使用定時(shí)器。這里跑一個(gè)node程序：

const open = require('open');
logTime("Start Runing");

// user setting
const SIGN_IN_TIME = "09:30:00";
const SIGN_OUT_TIME = "20:20:00";

// code implementation
const 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 out
if (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. 自動(dòng)登錄

這個(gè)重點(diǎn)還是在于找到需要填入內(nèi)容的DOM元素

(function() {
 'use strict';
 // login
 document.querySelector("#loginid").value = "用戶名";
 document.querySelector("#userpassword").value = "密碼";
 document.querySelector("#login").click();
})();

3. 定時(shí)點(diǎn)擊按鈕

這一步最重要的是要準(zhǔn)確找到按鈕，檢查元素慢慢查找吧。
其次，設(shè)定好簽到和簽退的時(shí)間，只有固定時(shí)間才會(huì)自動(dòng)簽到，防止每次登陸進(jìn)來自動(dòng)簽到或簽退，這樣太頻繁被發(fā)現(xiàn)。

(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!`);
 // 重點(diǎn)就在這兒了，找到網(wǎng)站的簽到按鈕#signInButton，并觸發(fā)他的點(diǎn)擊事件
 document.querySelector("#signInButton").click();
 }

 function logTime(str, time=new Date()){
 console.log(`${str} -> ${time.getHours()}:${time.getMinutes()}:${time.getSeconds()}`);
 }
})();

4. 結(jié)束

一套操作，打完收工。每天下班的時(shí)候，不管是提前溜還是晚點(diǎn)到。記得本地開一下程序：