https://youtu.be/vm7vxkyx4HE?si=sH3ZcLwNhidJzlhz const fs = require('fs'); const line = "Writing this text to a file"; //fs.appendText fs.writeFile('myfile.txt', line, err => { if (err) throw err; console.log('text to a file.'); }); fs.readFile('myfile.txt',…

https://youtu.be/M5BYcF3IGNM?si=h6lqaLSLXS2nSgtF class Book { constructor(isbn, title, author, publishedDate) { this.isbn = isbn; this.title = title; this.author = author; this.publishedDate = publishedDate; } static booksEqual(book, book2) { if (book instanceof Book…

https://youtu.be/1qir1_n-OyQ?si=R0N6yXhKSI-rBgIA const student = { first_name: 'Mike', last_name: 'Tyson', email: 'email@somemail.com' }; const prop = Object.keys(student); for (const property of prop) { console.log(`${property} : ${student[property]}`); }

https://youtu.be/TFIYHa-7Lm8 const d = new Date(); if (d instanceof Date) { console.log("object is a Date type"); } const num = 50; if (num instanceof Number) { console.log("Number type"); } const…

https://youtu.be/HlXZpaoLqSA?si=5LQRod9tr_67aW7W const arr= [4,5,6,7,2,1,3,100,4,6,3]; const u = new Set(arr); console.log(u); const uArray = Array.from(u); console.log(uArray);

https://youtu.be/lZhe3UnjlFs const arr = [3, 4, 5, 6, 8, 9, 1]; const to_copy = [...arr]; const arr2 = arr.slice(); console.log(arr2);

https://youtu.be/DCCL983URso function equalCheck(array1, array2) { if (!Array.isArray(array1) || !Array.isArray(array2)) { return false; } else if (array1 === array2) { return true; } else if (array1.length !== array2.length) { return false;…

https://youtu.be/iugOrBB_pD8 const today_date = new Date(); console.log(today_date); console.log(today_date.getDay()); console.log(today_date.getMonth()); console.log(today_date.getFullYear()); console.log(today_date.getHours());

https://youtu.be/IBjSCjX1ej4

https://youtu.be/EUDIpMA5PlI console.log(String.fromCodePoint(0x1F602)); console.log("I " + String.fromCodePoint(0x2764) + " JavaScript!"); console.log(String.fromCodePoint(0x1F4BB));