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Akif-HomeworkWeek3
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‎Week3/akif-week3.js

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// STRINGS! --------------
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let myString = 'hello,this,is,a,difficult,to,read,sentence';
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console.log(myString);
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console.log(myString.length);
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myString = myString.replace(/[,]/g, ' ');
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console.log(myString);
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// ARRAYS! -------------------------------------------------
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let favoriteAnimals = ['blowfish', 'capricorn', 'giraffe'];
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favoriteAnimals.push('turtle');
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console.log(favoriteAnimals);
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favoriteAnimals.splice(1, 0, 'meerkat');
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console.log("i added a new value 'meerkat' to the array");
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console.log(favoriteAnimals);
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console.log('The array has a length of: ' + favoriteAnimals.length);
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favoriteAnimals.splice(3, 1);
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console.log(favoriteAnimals);
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console.log('The item you are looking for is at index: ' + favoriteAnimals.indexOf('meerkat'));
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favoriteAnimals.splice(favoriteAnimals.indexOf('meerkat'), 1);
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// MORE JAVASCRIPT ! ------------------------------------------------
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// -----1111111111111111111-----------
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function getSum(a, b, c) {
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return a + b + c;
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}
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// -----222222222222222222-------------
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function colorCar(color) {
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return 'a ' + color + ' car';
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}
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//-----3333333333333333333--------------
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const myBooks = {
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Dostoyevsky: 'Crime and Punishment',
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'Franz Kafka': 'The Trial',
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'Anne Frank': 'Diarys',
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};
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function getBook(library) {
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for (let book in library) {
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console.log(book + ' - ' + library[book]);
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}
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}
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getBook(myBooks);
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// -----444444444444444444------------------
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const vehicleCodes = {
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1: 'car',
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2: 'motorbike',
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};
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function vehicleType(color, code) {
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console.log('A ' + color + ' ' + vehicleCodes[code]);
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}
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vehicleType('blue', 2);
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// _-------555555555555555555--------------------
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console.log(3 === 3 ? 'yes' : 'no');
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// -------66666666666666666666---------------------
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function vehicle(color, code, age) {
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if (age > 0) {
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age = 'used';
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} else {
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age = 'new';
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}
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console.log('A ' + color + ' ' + age + ' ' + vehicleCodes[code]);
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}
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vehicle('blue', 1, 5);
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// -------777777777777 && 888888888888888--------------------
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let vehicleList = ['car', 'motorbike', 'caravan', 'bike', 'truck'];
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console.log('Third element of the array is ' + vehicleList[2]);
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// --------9999999999999999999999 -----------------------------
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function vehicle1(color, code, age) {
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if (age > 1) {
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age = 'used';
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} else {
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age = 'new';
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}
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console.log('A ' + color + ' ' + age + ' ' + vehicleList[code]);
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}
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vehicle1('green', 3, 1);
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//-------10 10 10 10 10 10 10 10 ---------------------
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// function advertisement(arrname) {
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// for (let i = 0; i < arrname.length; i++) {
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// arrname[i] += 's';
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// }
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// for (let i = 0; i < arrname.length - 2; i++) {
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// arrname[i] += ',';
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// }
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// arrname[arrname.length - 2] += ' and';
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// console.log("Amazing Joe's Garage, we service " + arrname.join(' ') + '.');
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// }
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function advertisement(arrname) {
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let vehicles1 = arrname.slice(0, arrname.length - 1).join('s, ');
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let lastVehicle = arrname[arrname.length - 1];
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console.log(`"Amazing Joe's Garage, we service ${vehicles1}s and ${lastVehicle}s."`);
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}
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advertisement(vehicleList);
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// --------11 11 11 111 11 11 11 11 ----------------------
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vehicleList.push('ship');
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advertisement(vehicleList);
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// ---12 12 12 12 12 12 12 12 // 13 13 13 // 14 14 14 14 -------------------------
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const teachers = {};
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teachers.HTML = 'Philipp Beau';
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teachers.CSS = 'Rob van Kruijsdijk';
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teachers.GIT = 'Unmesh Joshi';
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teachers.JS = 'Yash Kapila';
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console.log(teachers);
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// ---15 15 15 15 15 15 15 15 15 --------------------------------
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let x = [1, 2, 3];
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let y = [1, 2, 3];
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let z = y;
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console.log(x == y); // false
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console.log(x === y); // false
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console.log(x == z); // false
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console.log(x === z); // false
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console.log(y == z); // true
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console.log(y === z); // true
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// When i use == or ===, it compares whether they are same array or not.
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// to look they have a same content:
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console.log(x.toString() === y.toString()); // true
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// ---- 16 16 16 16 16 16 16 ------------------
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let o1 = { foo: 'bar' };
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let o2 = { foo: 'bar' };
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let o3 = o2;
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o2.foo = 'o2-changed';
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console.log(o3); //changing o2 change o3
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o1.foo = 'o1-changed';
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console.log(o3); //changing o1 doesnt change o3
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// **Does the order that you assign (o3 = o2 or o2 = o3) matter?
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// Yes absolutely matter. if we write o2 = o3, o2 would be declared twice and cause ERROR.
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// ----17 17 17 17 17 17 17 17 ----------------
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let bar = 42;
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console.log(typeof typeof bar); // string
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// Because typeof 'bar' is number and typeof 'number' is string. Number is text.

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