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| document.addEventListener('visibilitychange', () => { | |
| if (document.visibilityState === 'hidden') { | |
| window.navigator.sendBeacon('/log', 'session ended'); | |
| } | |
| }); |
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| const express = require('express'); | |
| const bodyParser = require('body-parser'); | |
| const app = express(); | |
| app.use(bodyParser.text()); | |
| app.use(express.static('public')); | |
| app.post('/log', (req, res) => { | |
| console.log('Received Beacon: ', JSON.parse(req.body)); | |
| }); | |
| app.listen(3000, console.log('App listening...')); |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Beacon API</title> | |
| </head> | |
| <body> | |
| <script> | |
| window.events = []; |
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| window.addEventListener('click', event => { | |
| window.events.push({ type: 'Click', x: event.clientX, y: event.clientY }); | |
| }); |
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| Pipes--- | |
| 1.Download the contents of "Harry Potter and the Goblet of fire" using the command line from here | |
| wget https://raw.githubusercontent.com/bobdeng/owlreader/master/ERead/assets/books/Harry%20Potter%20and%20the%20Goblet%20of%20Fire.txt | |
| 1. Print the first three lines in the book | |
| 2.Print the last 10 lines in the book | |
| 3. How many times do the following words occur in the book? |
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| body { | |
| font-family: "Commissioner", sans-serif; | |
| font: "Commissioner", sans-serif; | |
| } | |
| .app-container { | |
| padding: 50px; | |
| } | |
| .search { |
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| import React, { useState, useEffect } from 'react'; | |
| import { Search } from './Search'; | |
| import { Video } from './Video'; | |
| export function App() { | |
| const [videos, setVideos] = useState([]); | |
| const [currentChannelId, setCurrentChannelId] = useState(); | |
| const [channelName, setChannelName] = useState(); | |
| const [searchError, setSearchError] = useState(); // Create searchError state |
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| server { | |
| listen 80; | |
| listen [::]:80; | |
| root /var/www/{domain}/html; | |
| index index.html index.htm index.nginx-debian.html; | |
| server_name {domain} www.{domain}; | |
| location /api/ { |
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| { | |
| "version": 2, | |
| "projects": { | |
| "rickandroll": { | |
| "root": "apps/rickandroll", | |
| "sourceRoot": "apps/rickandroll/src", | |
| "projectType": "application", | |
| "targets": { | |
| "build": { | |
| "executor": "@nrwl/node:build", |