javascript prototype tutorial

PPTX 10 sahifa 1,5 MB Bepul yuklash

10 sahifa

FaylHub.uz

Telegram orqali yuklab olish

Hajm 1,5 MB

Fayl turi PPTX

Sahifalar 10

Yangilangan Dek 2025

Sahifa ko'rinishi (5 sahifa)

Pastga aylantiring 👇

1 / 10

$tutorial 4: prototype, __proto__, async, event loop 4.1 prototype every javascript object has a prototype, which allows inheritance of properties and methods. prototypes enable objects to share functionality without duplicating code. function animal(name) { this.name = name; } animal.prototype.speak = function () { console.log(`${this.name} makes a sound`); }; const dog = new animal("dog"); dog.speak(); // output: dog makes a sound real-world example : extending a base class to create specialized objects. function vehicle(type) { this.type = type; } vehicle.prototype.start = function () { console.log(`${this.type} is starting...`); }; function car(make, model) { vehicle.call(this, "car"); this.make = make; this.model = model; } car.prototype = object.create(vehicle.prototype); const mycar = new car("toyota", "corolla"); mycar.start(); // output: car is starting... 4.2 __proto__ the __proto__ property points to the prototype of an object. it allows you to access inherited properties and methods. const obj = {}; console.log(obj.__proto__ === object.prototype); // output: true real-world example : accessing …$

2 / 10

completion (or failure) of an asynchronous operation. function fetchdata() { return new promise((resolve, reject) => { settimeout(() => resolve("data fetched"), 1000); }); } fetchdata().then((data) => console.log(data)); // output: data fetched real-world example : fetching data from an api. function fetchuserdata(userid) { return new promise((resolve, reject) => { settimeout(() => { const users = { 1: "alice", 2: "bob" }; resolve(users[userid]); }, 1000); }); } fetchuserdata(1).then((user) => console.log(user)); // output: alice 4.3.2 async/await async/await provides a cleaner syntax for working with promises. async function getdata() { const data = await fetchdata(); console.log(data); // output: data fetched } getdata(); real-world example : chaining multiple asynchronous operations. async function getuserandposts(userid) { const user = await fetchuserdata(userid); const posts = await fetchposts(user); console.log(`${user}'s posts:`, posts); } getuserandposts(1); 1. event loop and asynchronous javascript understanding how javascript handles asynchronous operations is crucial. the event loop is the mechanism that allows javascript to perform non-blocking operations …

3 / 10

// loading data... // waiting for data... // data loaded image1.gif

4 / 10

5 / 10

Ko'proq o'qimoqchimisiz?

Barcha 10 sahifani Telegram orqali bepul yuklab oling.

To'liq faylni yuklab olish

"javascript prototype tutorial" haqida

tutorial 4: prototype, __proto__, async, event loop 4.1 prototype every javascript object has a prototype, which allows inheritance of properties and methods. prototypes enable objects to share functionality without duplicating code. function animal(name) { this.name = name; } animal.prototype.speak = function () { console.log(`${this.name} makes a sound`); }; const dog = new animal("dog"); dog.speak(); // output: dog makes a sound real-world example : extending a base class to create specialized objects. function vehicle(type) { this.type = type; } vehicle.prototype.start = function () { console.log(`${this.type} is starting...`); }; function car(make, model) { vehicle.call(this, "car"); this.make = make; this.model = model; } car.prototype = object.create(vehicle.prototype); const mycar ...

Bu fayl PPTX formatida 10 sahifadan iborat (1,5 MB). "javascript prototype tutorial"ni yuklab olish uchun chap tomondagi Telegram tugmasini bosing.

Teglar: javascript prototype tutorial PPTX 10 sahifa Bepul yuklash Telegram