{"id":87297,"date":"2024-12-08T07:26:45","date_gmt":"2024-12-08T03:56:45","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/5-essential-javascript-design-patterns-for-scalable-web-development-30an\/"},"modified":"2024-12-08T07:26:45","modified_gmt":"2024-12-08T03:56:45","slug":"5-essential-javascript-design-patterns-for-scalable-web-development-30an","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/5-essential-javascript-design-patterns-for-scalable-web-development-30an\/","title":{"rendered":"5 \u0627\u0644\u06af\u0648\u06cc \u0627\u0633\u0627\u0633\u06cc \u0637\u0631\u0627\u062d\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0631\u0627\u06cc \u062a\u0648\u0633\u0639\u0647 \u0648\u0628 \u0645\u0642\u06cc\u0627\u0633 \u067e\u0630\u06cc\u0631"},"content":{"rendered":"

Summarize this content to 400 words in Persian Lang
\n \u0627\u0644\u06af\u0648\u0647\u0627\u06cc \u0637\u0631\u0627\u062d\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0628\u0632\u0627\u0631\u0647\u0627\u06cc \u0636\u0631\u0648\u0631\u06cc \u0628\u0631\u0627\u06cc \u0633\u0627\u062e\u062a \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u062f\u06cc \u0645\u0642\u06cc\u0627\u0633 \u067e\u0630\u06cc\u0631 \u0648 \u0642\u0627\u0628\u0644 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0647\u0633\u062a\u0646\u062f. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u06cc\u06a9 \u062a\u0648\u0633\u0639\u0647 \u062f\u0647\u0646\u062f\u0647\u060c \u0645\u062a\u0648\u062c\u0647 \u0634\u062f\u0647 \u0627\u0645 \u06a9\u0647 \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648\u0647\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0647 \u0637\u0648\u0631 \u0642\u0627\u0628\u0644 \u062a\u0648\u062c\u0647\u06cc \u0633\u0627\u0632\u0645\u0627\u0646\u062f\u0647\u06cc \u06a9\u062f \u0631\u0627 \u0628\u0647\u0628\u0648\u062f \u0628\u062e\u0634\u062f \u0648 \u067e\u06cc\u0686\u06cc\u062f\u06af\u06cc \u0631\u0627 \u06a9\u0627\u0647\u0634 \u062f\u0647\u062f. \u0628\u06cc\u0627\u06cc\u06cc\u062f \u067e\u0646\u062c \u0627\u0644\u06af\u0648\u06cc \u0637\u0631\u0627\u062d\u06cc \u06a9\u0644\u06cc\u062f\u06cc \u0631\u0627 \u06a9\u0647 \u062f\u0631 \u067e\u0631\u0648\u0698\u0647\u200c\u0647\u0627\u06cc \u0645\u0646 \u0627\u0631\u0632\u0634\u0645\u0646\u062f \u0647\u0633\u062a\u0646\u062f\u060c \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u0645.<\/p>\n

\u0627\u0644\u06af\u0648\u06cc Singleton \u06cc\u06a9 \u0631\u0648\u06cc\u06a9\u0631\u062f \u0642\u062f\u0631\u062a\u0645\u0646\u062f \u0627\u0633\u062a \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u0634\u0645\u0627 \u0628\u0627\u06cc\u062f \u0645\u0637\u0645\u0626\u0646 \u0634\u0648\u06cc\u062f \u06a9\u0647 \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u0641\u0642\u0637 \u06cc\u06a9 \u0646\u0645\u0648\u0646\u0647 \u062f\u0631 \u0633\u0631\u0627\u0633\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0634\u0645\u0627 \u062f\u0627\u0631\u062f. \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0648\u0636\u0639\u06cc\u062a \u062c\u0647\u0627\u0646\u06cc \u06cc\u0627 \u0647\u0645\u0627\u0647\u0646\u06af\u06cc \u0627\u0642\u062f\u0627\u0645\u0627\u062a \u062f\u0631 \u0633\u0631\u0627\u0633\u0631 \u0633\u06cc\u0633\u062a\u0645 \u0645\u0641\u06cc\u062f \u0627\u0633\u062a. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0645\u062b\u0627\u0644\u06cc \u0627\u0632 \u0646\u062d\u0648\u0647 \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0627\u0644\u06af\u0648\u06cc Singleton \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0622\u0648\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a:<\/p>\n

const Singleton = (function() {
\n let instance;<\/p>\n

function createInstance() {
\n const object = new Object(“I am the instance”);
\n return object;
\n }<\/p>\n

return {
\n getInstance: function() {
\n if (!instance) {
\n instance = createInstance();
\n }
\n return instance;
\n }
\n };
\n})();<\/p>\n

const instance1 = Singleton.getInstance();
\nconst instance2 = Singleton.getInstance();<\/p>\n

console.log(instance1 === instance2); \/\/ true<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u060c Singleton \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0639\u0628\u0627\u0631\u062a \u062a\u0627\u0628\u0639 \u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0634\u062f\u0647 (IIFE) \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 getInstance \u0645\u062a\u062f \u062a\u0636\u0645\u06cc\u0646 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u062a\u0646\u0647\u0627 \u06cc\u06a9 \u0646\u0645\u0648\u0646\u0647 \u0627\u06cc\u062c\u0627\u062f \u0648 \u0628\u0631\u06af\u0631\u062f\u0627\u0646\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f\u060c \u0635\u0631\u0641 \u0646\u0638\u0631 \u0627\u0632 \u0627\u06cc\u0646\u06a9\u0647 \u0686\u0646\u062f \u0628\u0627\u0631 \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a.<\/p>\n

\u0627\u0644\u06af\u0648\u06cc Observer \u06cc\u06a9\u06cc \u062f\u06cc\u06af\u0631 \u0627\u0632 \u0627\u0644\u06af\u0648\u0647\u0627\u06cc \u0637\u0631\u0627\u062d\u06cc \u062d\u06cc\u0627\u062a\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0646 \u0627\u063a\u0644\u0628 \u062f\u0631 \u067e\u0631\u0648\u0698\u0647 \u0647\u0627\u06cc \u062e\u0648\u062f \u0627\u0632 \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u0645. \u0627\u06cc\u0646 \u06cc\u06a9 \u0645\u062f\u0644 \u0627\u0634\u062a\u0631\u0627\u06a9 \u0631\u0627 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u062f\u0631 \u0622\u0646 \u0627\u0634\u06cc\u0627 (\u0646\u0627\u0638\u0631\u0627\u0646) \u0628\u0647 \u0637\u0648\u0631 \u062e\u0648\u062f\u06a9\u0627\u0631 \u0627\u0632 \u0647\u0631\u06af\u0648\u0646\u0647 \u062a\u063a\u06cc\u06cc\u0631 \u0648\u0636\u0639\u06cc\u062a \u062f\u0631 \u06cc\u06a9 \u0634\u06cc \u062f\u06cc\u06af\u0631 (\u0645\u0648\u0636\u0648\u0639) \u0645\u0637\u0644\u0639 \u0645\u06cc \u0634\u0648\u0646\u062f. \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u067e\u0627\u06cc\u0647 \u0648 \u0627\u0633\u0627\u0633 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u0631\u0648\u06cc\u062f\u0627\u062f \u0645\u062d\u0648\u0631 \u0627\u0633\u062a \u0648 \u0628\u0647 \u0637\u0648\u0631 \u06af\u0633\u062a\u0631\u062f\u0647 \u062f\u0631 \u062c\u0639\u0628\u0647 \u0627\u0628\u0632\u0627\u0631 \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u06cc\u06a9 \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0627\u0633\u0627\u0633\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f:<\/p>\n

class Subject {
\n constructor() {
\n this.observers = [];
\n }<\/p>\n

subscribe(observer) {
\n this.observers.push(observer);
\n }<\/p>\n

unsubscribe(observer) {
\n this.observers = this.observers.filter(obs => obs !== observer);
\n }<\/p>\n

notify(data) {
\n this.observers.forEach(observer => observer.update(data));
\n }
\n}<\/p>\n

class Observer {
\n update(data) {
\n console.log(‘Observer received data:’, data);
\n }
\n}<\/p>\n

const subject = new Subject();
\nconst observer1 = new Observer();
\nconst observer2 = new Observer();<\/p>\n

subject.subscribe(observer1);
\nsubject.subscribe(observer2);<\/p>\n

subject.notify(‘Hello, observers!’);<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0647\u0646\u06af\u0627\u0645 \u0633\u0627\u062e\u062a \u0631\u0627\u0628\u0637 \u0647\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u06cc \u067e\u06cc\u0686\u06cc\u062f\u0647 \u06cc\u0627 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0639\u0645\u0644\u06cc\u0627\u062a \u0646\u0627\u0647\u0645\u0632\u0645\u0627\u0646 \u0645\u0641\u06cc\u062f \u0627\u0633\u062a.<\/p>\n

\u0627\u0644\u06af\u0648\u06cc \u06a9\u0627\u0631\u062e\u0627\u0646\u0647 \u06cc\u06a9 \u0627\u0644\u06af\u0648\u06cc \u0627\u06cc\u062c\u0627\u062f\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0646 \u0627\u063a\u0644\u0628 \u062f\u0631 \u0645\u0648\u0627\u0642\u0639\u06cc \u06a9\u0647 \u0646\u06cc\u0627\u0632 \u0628\u0647 \u0627\u06cc\u062c\u0627\u062f \u0627\u0634\u06cc\u0627\u0621 \u0628\u062f\u0648\u0646 \u0645\u0634\u062e\u0635 \u06a9\u0631\u062f\u0646 \u06a9\u0644\u0627\u0633 \u062f\u0642\u06cc\u0642 \u0622\u0646\u0647\u0627 \u062f\u0627\u0631\u0645\u060c \u0627\u0632 \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u0645. \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0631\u0627\u0647\u06cc \u0628\u0631\u0627\u06cc \u0648\u0627\u06af\u0630\u0627\u0631\u06cc \u0645\u0646\u0637\u0642 \u0646\u0645\u0648\u0646\u0647 \u0633\u0627\u0632\u06cc \u0628\u0647 \u06a9\u0644\u0627\u0633 \u0647\u0627\u06cc \u06a9\u0648\u062f\u06a9 \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u062f\u0647\u062f. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0645\u062b\u0627\u0644\u06cc \u0627\u0632 \u0646\u062d\u0648\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u0644\u06af\u0648\u06cc \u06a9\u0627\u0631\u062e\u0627\u0646\u0647 \u0622\u0648\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a:<\/p>\n

class Car {
\n constructor(options) {
\n this.doors = options.doors || 4;
\n this.state = options.state || ‘brand new’;
\n this.color = options.color || ‘white’;
\n }
\n}<\/p>\n

class Truck {
\n constructor(options) {
\n this.wheels = options.wheels || 6;
\n this.state = options.state || ‘used’;
\n this.color = options.color || ‘blue’;
\n }
\n}<\/p>\n

class VehicleFactory {
\n createVehicle(options) {
\n if (options.vehicleType === ‘car’) {
\n return new Car(options);
\n } else if (options.vehicleType === ‘truck’) {
\n return new Truck(options);
\n }
\n }
\n}<\/p>\n

const factory = new VehicleFactory();
\nconst car = factory.createVehicle({
\n vehicleType: ‘car’,
\n doors: 2,
\n color: ‘red’,
\n state: ‘used’
\n});<\/p>\n

console.log(car);<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0647\u0646\u06af\u0627\u0645 \u06a9\u0627\u0631 \u0628\u0627 \u0627\u0634\u06cc\u0627\u0621 \u067e\u06cc\u0686\u06cc\u062f\u0647 \u06cc\u0627 \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u0646\u0648\u0639 \u062f\u0642\u06cc\u0642 \u0634\u06cc \u0645\u0648\u0631\u062f \u0646\u06cc\u0627\u0632 \u062a\u0627 \u0632\u0645\u0627\u0646 \u0627\u062c\u0631\u0627 \u0645\u0634\u062e\u0635 \u0646\u06cc\u0633\u062a \u0645\u0641\u06cc\u062f \u0627\u0633\u062a.<\/p>\n

\u0627\u0644\u06af\u0648\u06cc \u0645\u0627\u0698\u0648\u0644 \u06cc\u06a9\u06cc \u0627\u0632 \u0627\u0644\u06af\u0648\u0647\u0627\u06cc \u0645\u0648\u0631\u062f \u0639\u0644\u0627\u0642\u0647 \u0645\u0646 \u0628\u0631\u0627\u06cc \u06a9\u067e\u0633\u0648\u0644\u0647 \u06a9\u0631\u062f\u0646 \u06a9\u062f \u0648 \u062f\u0627\u062f\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0631\u0648\u0634\u06cc \u0631\u0627 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0633\u0637\u0648\u062d \u062f\u0633\u062a\u0631\u0633\u06cc \u062e\u0635\u0648\u0635\u06cc \u0648 \u0639\u0645\u0648\u0645\u06cc \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u0628\u0647 \u0633\u0627\u0632\u0645\u0627\u0646\u062f\u0647\u06cc \u06a9\u062f \u062f\u0631 \u0642\u0633\u0645\u062a \u0647\u0627\u06cc \u062a\u0645\u06cc\u0632 \u0648 \u062c\u062f\u0627 \u06a9\u0645\u06a9 \u0645\u06cc \u06a9\u0646\u062f. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0646\u062d\u0648\u0647 \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0627\u0644\u06af\u0648\u06cc \u0645\u0627\u0698\u0648\u0644 \u0628\u0647 \u0627\u06cc\u0646 \u0635\u0648\u0631\u062a \u0627\u0633\u062a:<\/p>\n

const MyModule = (function() {
\n \/\/ Private variables and functions
\n let privateVariable = ‘I am private’;
\n function privateFunction() {
\n console.log(‘This is a private function’);
\n }<\/p>\n

\/\/ Public API
\n return {
\n publicVariable: ‘I am public’,
\n publicFunction: function() {
\n console.log(‘This is a public function’);
\n privateFunction();
\n }
\n };
\n})();<\/p>\n

console.log(MyModule.publicVariable);
\nMyModule.publicFunction();
\nconsole.log(MyModule.privateVariable); \/\/ undefined<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0645\u0627\u0698\u0648\u0644 \u0647\u0627\u06cc \u06a9\u062f \u0645\u0633\u062a\u0642\u0644 \u0628\u0627 \u0631\u0627\u0628\u0637 \u0647\u0627\u06cc \u0648\u0627\u0636\u062d \u0628\u0633\u06cc\u0627\u0631 \u0639\u0627\u0644\u06cc \u0627\u0633\u062a.<\/p>\n

\u0627\u0644\u06af\u0648\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0627\u0644\u06af\u0648\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0627\u0634\u06cc\u0627\u0621 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0627\u0644\u06af\u0648\u06cc \u06cc\u06a9 \u0634\u06cc \u0645\u0648\u062c\u0648\u062f \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0634\u0628\u06cc\u0647 \u0633\u0627\u0632\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u0645. \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0632\u0645\u0627\u0646\u06cc \u0645\u0641\u06cc\u062f \u0627\u0633\u062a \u06a9\u0647 \u0627\u06cc\u062c\u0627\u062f \u0634\u06cc \u06af\u0631\u0627\u0646 \u0627\u0633\u062a \u0648 \u0627\u0634\u06cc\u0627\u0621 \u0645\u0634\u0627\u0628\u0647 \u0645\u0648\u0631\u062f \u0646\u06cc\u0627\u0632 \u0627\u0633\u062a. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u06cc\u06a9 \u0645\u062b\u0627\u0644 \u0627\u0633\u062a:<\/p>\n

const vehiclePrototype = {
\n init: function(model) {
\n this.model = model;
\n },
\n getModel: function() {
\n console.log(‘The model of this vehicle is ‘ + this.model);
\n }
\n};<\/p>\n

function vehicle(model) {
\n function F() {}
\n F.prototype = vehiclePrototype;<\/p>\n

const f = new F();
\n f.init(model);
\n return f;
\n}<\/p>\n

const car = vehicle(‘Honda’);
\ncar.getModel();<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0627\u0645\u06a9\u0627\u0646 \u0627\u06cc\u062c\u0627\u062f \u0627\u0634\u06cc\u0627\u0621 \u062c\u062f\u06cc\u062f \u0628\u0627 \u06cc\u06a9 \u0646\u0645\u0648\u0646\u0647 \u0627\u0648\u0644\u06cc\u0647 \u062e\u0627\u0635 \u0631\u0627 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u06a9\u0627\u0631\u0622\u0645\u062f\u062a\u0631 \u0627\u0632 \u0627\u06cc\u062c\u0627\u062f \u0627\u0634\u06cc\u0627\u0621 \u062c\u062f\u06cc\u062f \u0627\u0632 \u0627\u0628\u062a\u062f\u0627 \u0628\u0627\u0634\u062f.<\/p>\n

\u0647\u0646\u06af\u0627\u0645 \u067e\u06cc\u0627\u062f\u0647\u200c\u0633\u0627\u0632\u06cc \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648\u0647\u0627 \u062f\u0631 \u067e\u0631\u0648\u0698\u0647\u200c\u0647\u0627\u06cc\u0645\u060c \u0645\u062a\u0648\u062c\u0647 \u0634\u062f\u0645 \u06a9\u0647 \u0633\u0627\u0632\u0645\u0627\u0646\u200c\u062f\u0647\u06cc \u06a9\u062f \u0648 \u0642\u0627\u0628\u0644\u06cc\u062a \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0622\u0646\u200c\u0647\u0627 \u0631\u0627 \u0628\u0647\u200c\u0637\u0648\u0631 \u0686\u0634\u0645\u06af\u06cc\u0631\u06cc \u0628\u0647\u0628\u0648\u062f \u0645\u06cc\u200c\u0628\u062e\u0634\u0646\u062f. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u0627\u0644\u06af\u0648\u06cc Singleton \u062f\u0631 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0648\u0636\u0639\u06cc\u062a \u062c\u0647\u0627\u0646\u06cc \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u062f\u06cc \u062f\u0631 \u0645\u0642\u06cc\u0627\u0633 \u0628\u0632\u0631\u06af \u0628\u0633\u06cc\u0627\u0631 \u0627\u0631\u0632\u0634\u0645\u0646\u062f \u0628\u0648\u062f\u0647 \u0627\u0633\u062a. \u0645\u0646 \u0627\u0632 \u0622\u0646 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0627\u0634\u06cc\u0627\u0621 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u06a9\u0647 \u0628\u0627\u06cc\u062f \u062f\u0631 \u0633\u0631\u0627\u0633\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0628\u0647 \u0622\u0646\u0647\u0627 \u062f\u0633\u062a\u0631\u0633\u06cc \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0647 \u0627\u0645.<\/p>\n

\u0627\u0644\u06af\u0648\u06cc Observer \u0628\u0647 \u0648\u06cc\u0698\u0647 \u062f\u0631 \u0633\u0627\u062e\u062a \u0631\u0627\u0628\u0637 \u0647\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u06cc \u0648\u0627\u06a9\u0646\u0634\u06cc \u0645\u0641\u06cc\u062f \u0628\u0648\u062f\u0647 \u0627\u0633\u062a. \u062f\u0631 \u06cc\u06a9 \u067e\u0631\u0648\u0698\u0647\u060c \u0645\u0646 \u0627\u0632 \u0622\u0646 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 \u0633\u06cc\u0633\u062a\u0645 \u0627\u0639\u0644\u0627\u0646 \u0628\u0644\u0627\u062f\u0631\u0646\u06af \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0645 \u06a9\u0647 \u062f\u0631 \u0622\u0646 \u0686\u0646\u062f\u06cc\u0646 \u0645\u0624\u0644\u0641\u0647 \u0628\u0627\u06cc\u062f \u0628\u0647\u200c\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0645\u06cc\u200c\u0634\u062f\u0646\u062f \u06a9\u0647 \u062f\u0627\u062f\u0647\u200c\u0647\u0627\u06cc \u062c\u062f\u06cc\u062f \u0627\u0632 \u0633\u0631\u0648\u0631 \u062f\u0631\u06cc\u0627\u0641\u062a \u0645\u06cc\u200c\u0634\u062f.<\/p>\n

Factory Pattern \u062f\u0631 \u0633\u0646\u0627\u0631\u06cc\u0648\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0645\u0646 \u0646\u06cc\u0627\u0632 \u0628\u0647 \u0627\u06cc\u062c\u0627\u062f \u0627\u0646\u0648\u0627\u0639 \u0645\u062e\u062a\u0644\u0641 \u0627\u0634\u06cc\u0627\u0621 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0648\u0631\u0648\u062f\u06cc \u06cc\u0627 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u06a9\u0627\u0631\u0628\u0631 \u062f\u0627\u0634\u062a\u0645\u060c \u0627\u0631\u0632\u0634 \u062e\u0648\u062f \u0631\u0627 \u062b\u0627\u0628\u062a \u06a9\u0631\u062f\u0647 \u0627\u0633\u062a. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u062f\u0631 \u06cc\u06a9 \u0633\u06cc\u0633\u062a\u0645 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0645\u062d\u062a\u0648\u0627\u060c \u0645\u0646 \u0627\u0632 \u06cc\u06a9 \u06a9\u0627\u0631\u062e\u0627\u0646\u0647 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0627\u0646\u0648\u0627\u0639 \u0645\u062e\u062a\u0644\u0641 \u0639\u0646\u0627\u0635\u0631 \u0645\u062d\u062a\u0648\u0627 (\u0645\u062a\u0646\u060c \u062a\u0635\u0648\u06cc\u0631\u060c \u0648\u06cc\u062f\u0626\u0648) \u0628\u0631 \u0627\u0633\u0627\u0633 \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0627\u0631\u0628\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0645.<\/p>\n

\u0627\u0644\u06af\u0648\u06cc \u0645\u0627\u0698\u0648\u0644 \u0631\u0627\u0647 \u062d\u0644 \u0627\u0635\u0644\u06cc \u0645\u0646 \u0628\u0631\u0627\u06cc \u0633\u0627\u0632\u0645\u0627\u0646\u062f\u0647\u06cc \u06a9\u062f \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc \u0628\u0632\u0631\u06af\u062a\u0631 \u0628\u0648\u062f\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0628\u0647 \u0645\u0646 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u0645\u0627\u0698\u0648\u0644 \u0647\u0627\u06cc \u0645\u0633\u062a\u0642\u0644 \u0628\u0627 \u0631\u0627\u0628\u0637 \u0647\u0627\u06cc \u0648\u0627\u0636\u062d \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u0645\u060c \u06a9\u0647 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u0631\u0627 \u0622\u0633\u0627\u0646 \u062a\u0631 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u0627\u0632 \u062a\u062f\u0627\u062e\u0644 \u0646\u0627\u0645\u06af\u0630\u0627\u0631\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n

\u0627\u0644\u06af\u0648\u06cc \u0627\u0648\u0644\u06cc\u0647 \u062f\u0631 \u0633\u0646\u0627\u0631\u06cc\u0648\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0645\u0646 \u0646\u06cc\u0627\u0632 \u0628\u0647 \u0627\u06cc\u062c\u0627\u062f \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0627\u0634\u06cc\u0627\u0621 \u0645\u0634\u0627\u0628\u0647 \u062f\u0627\u0634\u062a\u0645 \u0645\u0641\u06cc\u062f \u0628\u0648\u062f\u0647 \u0627\u0633\u062a. \u062f\u0631 \u06cc\u06a9 \u067e\u0631\u0648\u0698\u0647 \u062a\u0648\u0633\u0639\u0647 \u0628\u0627\u0632\u06cc\u060c \u0645\u0646 \u0627\u0632 \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u06a9\u0627\u0631\u0622\u0645\u062f \u0646\u0645\u0648\u0646\u0647\u200c\u0647\u0627\u06cc \u0645\u062a\u0639\u062f\u062f\u06cc \u0627\u0632 \u0645\u0648\u062c\u0648\u062f\u06cc\u062a\u200c\u0647\u0627\u06cc \u0628\u0627\u0632\u06cc \u0628\u0627 \u0631\u0641\u062a\u0627\u0631 \u0645\u0634\u062a\u0631\u06a9 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0645.<\/p>\n

\u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648\u0647\u0627 \u0642\u062f\u0631\u062a\u0645\u0646\u062f \u0647\u0633\u062a\u0646\u062f\u060c \u0645\u0647\u0645 \u0627\u0633\u062a \u06a9\u0647 \u0627\u0632 \u0622\u0646\u0647\u0627 \u0628\u0627 \u0627\u062d\u062a\u06cc\u0627\u0637 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f. \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0628\u06cc\u0634 \u0627\u0632 \u062d\u062f \u06cc\u0627 \u0633\u0648\u0621 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u0644\u06af\u0648\u0647\u0627\u06cc \u0637\u0631\u0627\u062d\u06cc \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0645\u0646\u062c\u0631 \u0628\u0647 \u067e\u06cc\u0686\u06cc\u062f\u06af\u06cc \u063a\u06cc\u0631 \u0636\u0631\u0648\u0631\u06cc \u0634\u0648\u062f. \u0645\u0646 \u0647\u0645\u06cc\u0634\u0647 \u0646\u06cc\u0627\u0632\u0647\u0627\u06cc \u062e\u0627\u0635 \u067e\u0631\u0648\u0698\u0647 \u0648 \u0622\u0634\u0646\u0627\u06cc\u06cc \u062a\u06cc\u0645 \u0628\u0627 \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648\u0647\u0627 \u0631\u0627 \u0642\u0628\u0644 \u0627\u0632 \u0627\u062c\u0631\u0627\u06cc \u0622\u0646\u0647\u0627 \u062f\u0631 \u0646\u0638\u0631 \u0645\u06cc \u06af\u06cc\u0631\u0645.<\/p>\n

\u062f\u0631 \u062a\u062c\u0631\u0628\u0647 \u0645\u0646\u060c \u06a9\u0644\u06cc\u062f \u0645\u0648\u0641\u0642\u06cc\u062a \u0622\u0645\u06cc\u0632 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648\u0647\u0627\u060c \u062f\u0631\u06a9 \u0645\u0634\u06a9\u0644\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0622\u0646\u0647\u0627 \u062d\u0644 \u0645\u06cc \u06a9\u0646\u0646\u062f \u0648 \u0632\u0645\u0627\u0646 \u0628\u0647 \u06a9\u0627\u0631\u06af\u06cc\u0631\u06cc \u0622\u0646\u0647\u0627. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u0627\u0644\u06af\u0648\u06cc Singleton \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0648\u0636\u0639\u06cc\u062a \u062c\u0647\u0627\u0646\u06cc \u0639\u0627\u0644\u06cc \u0627\u0633\u062a\u060c \u0627\u0645\u0627 \u062f\u0631 \u0635\u0648\u0631\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0628\u06cc\u0634 \u0627\u0632 \u062d\u062f \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u062a\u0633\u062a \u0648\u0627\u062d\u062f \u0631\u0627 \u062f\u0634\u0648\u0627\u0631\u062a\u0631 \u06a9\u0646\u062f. \u0627\u0644\u06af\u0648\u06cc Observer \u0628\u0631\u0627\u06cc \u062c\u062f\u0627 \u06a9\u0631\u062f\u0646 \u0627\u062c\u0632\u0627 \u0639\u0627\u0644\u06cc \u0627\u0633\u062a\u060c \u0627\u0645\u0627 \u0627\u06af\u0631 \u062a\u0639\u062f\u0627\u062f \u0632\u06cc\u0627\u062f\u06cc \u0646\u0627\u0638\u0631 \u0628\u0647 \u06cc\u06a9 \u0645\u0648\u0636\u0648\u0639 \u0627\u0636\u0627\u0641\u0647 \u0634\u0648\u062f\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0645\u0646\u062c\u0631 \u0628\u0647 \u0645\u0634\u06a9\u0644\u0627\u062a \u0639\u0645\u0644\u06a9\u0631\u062f \u0634\u0648\u062f.<\/p>\n

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\u0645\u062e\u0644\u0648\u0642\u0627\u062a \u0645\u0627<\/p>\n

\u062d\u062a\u0645\u0627\u064b \u062e\u0644\u0627\u0642\u06cc\u062a \u0647\u0627\u06cc \u0645\u0627 \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f:<\/p>\n

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\u0628\u06cc\u0646\u0634 \u06a9\u0648\u0622\u0644\u0627\u06cc \u0641\u0646\u06cc | \u062f\u0648\u0631\u0627\u0646 \u0648 \u067e\u0698\u0648\u0627\u06a9 \u062c\u0647\u0627\u0646 | \u0633\u0631\u0645\u0627\u06cc\u0647 \u06af\u0630\u0627\u0631 \u0645\u0631\u06a9\u0632\u06cc \u0645\u062a\u0648\u0633\u0637 | \u06af\u06cc\u062c \u06a9\u0646\u0646\u062f\u0647 \u0627\u0633\u0631\u0627\u0631 \u0631\u0633\u0627\u0646\u0647 | \u0631\u0633\u0627\u0646\u0647 \u0639\u0644\u0645 \u0648 \u0639\u0635\u0631 | \u0647\u0646\u062f\u0648\u062a\u0648\u0627\u06cc \u0645\u062f\u0631\u0646<\/p>\n

\n

\u0627\u0644\u06af\u0648\u0647\u0627\u06cc \u0637\u0631\u0627\u062d\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0628\u0632\u0627\u0631\u0647\u0627\u06cc \u0636\u0631\u0648\u0631\u06cc \u0628\u0631\u0627\u06cc \u0633\u0627\u062e\u062a \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u062f\u06cc \u0645\u0642\u06cc\u0627\u0633 \u067e\u0630\u06cc\u0631 \u0648 \u0642\u0627\u0628\u0644 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0647\u0633\u062a\u0646\u062f. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u06cc\u06a9 \u062a\u0648\u0633\u0639\u0647 \u062f\u0647\u0646\u062f\u0647\u060c \u0645\u062a\u0648\u062c\u0647 \u0634\u062f\u0647 \u0627\u0645 \u06a9\u0647 \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648\u0647\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0647 \u0637\u0648\u0631 \u0642\u0627\u0628\u0644 \u062a\u0648\u062c\u0647\u06cc \u0633\u0627\u0632\u0645\u0627\u0646\u062f\u0647\u06cc \u06a9\u062f \u0631\u0627 \u0628\u0647\u0628\u0648\u062f \u0628\u062e\u0634\u062f \u0648 \u067e\u06cc\u0686\u06cc\u062f\u06af\u06cc \u0631\u0627 \u06a9\u0627\u0647\u0634 \u062f\u0647\u062f. \u0628\u06cc\u0627\u06cc\u06cc\u062f \u067e\u0646\u062c \u0627\u0644\u06af\u0648\u06cc \u0637\u0631\u0627\u062d\u06cc \u06a9\u0644\u06cc\u062f\u06cc \u0631\u0627 \u06a9\u0647 \u062f\u0631 \u067e\u0631\u0648\u0698\u0647\u200c\u0647\u0627\u06cc \u0645\u0646 \u0627\u0631\u0632\u0634\u0645\u0646\u062f \u0647\u0633\u062a\u0646\u062f\u060c \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u0645.<\/p>\n

\u0627\u0644\u06af\u0648\u06cc Singleton \u06cc\u06a9 \u0631\u0648\u06cc\u06a9\u0631\u062f \u0642\u062f\u0631\u062a\u0645\u0646\u062f \u0627\u0633\u062a \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u0634\u0645\u0627 \u0628\u0627\u06cc\u062f \u0645\u0637\u0645\u0626\u0646 \u0634\u0648\u06cc\u062f \u06a9\u0647 \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u0641\u0642\u0637 \u06cc\u06a9 \u0646\u0645\u0648\u0646\u0647 \u062f\u0631 \u0633\u0631\u0627\u0633\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0634\u0645\u0627 \u062f\u0627\u0631\u062f. \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0648\u0636\u0639\u06cc\u062a \u062c\u0647\u0627\u0646\u06cc \u06cc\u0627 \u0647\u0645\u0627\u0647\u0646\u06af\u06cc \u0627\u0642\u062f\u0627\u0645\u0627\u062a \u062f\u0631 \u0633\u0631\u0627\u0633\u0631 \u0633\u06cc\u0633\u062a\u0645 \u0645\u0641\u06cc\u062f \u0627\u0633\u062a. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0645\u062b\u0627\u0644\u06cc \u0627\u0632 \u0646\u062d\u0648\u0647 \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0627\u0644\u06af\u0648\u06cc Singleton \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0622\u0648\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a:<\/p>\n

\n
const<\/span> Singleton<\/span> =<\/span> (<\/span>function<\/span>()<\/span> {<\/span>\n  let<\/span> instance<\/span>;<\/span>\n\n  function<\/span> createInstance<\/span>()<\/span> {<\/span>\n    const<\/span> object<\/span> =<\/span> new<\/span> Object<\/span>(<\/span>\"<\/span>I am the instance<\/span>\"<\/span>);<\/span>\n    return<\/span> object<\/span>;<\/span>\n  }<\/span>\n\n  return<\/span> {<\/span>\n    getInstance<\/span>:<\/span> function<\/span>()<\/span> {<\/span>\n      if <\/span>(<\/span>!<\/span>instance<\/span>)<\/span> {<\/span>\n        instance<\/span> =<\/span> createInstance<\/span>();<\/span>\n      }<\/span>\n      return<\/span> instance<\/span>;<\/span>\n    }<\/span>\n  };<\/span>\n})();<\/span>\n\nconst<\/span> instance1<\/span> =<\/span> Singleton<\/span>.<\/span>getInstance<\/span>();<\/span>\nconst<\/span> instance2<\/span> =<\/span> Singleton<\/span>.<\/span>getInstance<\/span>();<\/span>\n\nconsole<\/span>.<\/span>log<\/span>(<\/span>instance1<\/span> ===<\/span> instance2<\/span>);<\/span> \/\/ true<\/span>\n<\/code><\/pre>\n
\n
\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u060c Singleton \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0639\u0628\u0627\u0631\u062a \u062a\u0627\u0628\u0639 \u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0634\u062f\u0647 (IIFE) \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 getInstance<\/code> \u0645\u062a\u062f \u062a\u0636\u0645\u06cc\u0646 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u062a\u0646\u0647\u0627 \u06cc\u06a9 \u0646\u0645\u0648\u0646\u0647 \u0627\u06cc\u062c\u0627\u062f \u0648 \u0628\u0631\u06af\u0631\u062f\u0627\u0646\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f\u060c \u0635\u0631\u0641 \u0646\u0638\u0631 \u0627\u0632 \u0627\u06cc\u0646\u06a9\u0647 \u0686\u0646\u062f \u0628\u0627\u0631 \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a.<\/p>\n
\u0627\u0644\u06af\u0648\u06cc Observer \u06cc\u06a9\u06cc \u062f\u06cc\u06af\u0631 \u0627\u0632 \u0627\u0644\u06af\u0648\u0647\u0627\u06cc \u0637\u0631\u0627\u062d\u06cc \u062d\u06cc\u0627\u062a\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0646 \u0627\u063a\u0644\u0628 \u062f\u0631 \u067e\u0631\u0648\u0698\u0647 \u0647\u0627\u06cc \u062e\u0648\u062f \u0627\u0632 \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u0645. \u0627\u06cc\u0646 \u06cc\u06a9 \u0645\u062f\u0644 \u0627\u0634\u062a\u0631\u0627\u06a9 \u0631\u0627 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u062f\u0631 \u0622\u0646 \u0627\u0634\u06cc\u0627 (\u0646\u0627\u0638\u0631\u0627\u0646) \u0628\u0647 \u0637\u0648\u0631 \u062e\u0648\u062f\u06a9\u0627\u0631 \u0627\u0632 \u0647\u0631\u06af\u0648\u0646\u0647 \u062a\u063a\u06cc\u06cc\u0631 \u0648\u0636\u0639\u06cc\u062a \u062f\u0631 \u06cc\u06a9 \u0634\u06cc \u062f\u06cc\u06af\u0631 (\u0645\u0648\u0636\u0648\u0639) \u0645\u0637\u0644\u0639 \u0645\u06cc \u0634\u0648\u0646\u062f. \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u067e\u0627\u06cc\u0647 \u0648 \u0627\u0633\u0627\u0633 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u0631\u0648\u06cc\u062f\u0627\u062f \u0645\u062d\u0648\u0631 \u0627\u0633\u062a \u0648 \u0628\u0647 \u0637\u0648\u0631 \u06af\u0633\u062a\u0631\u062f\u0647 \u062f\u0631 \u062c\u0639\u0628\u0647 \u0627\u0628\u0632\u0627\u0631 \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u06cc\u06a9 \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0627\u0633\u0627\u0633\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f:<\/p>\n
\n
class<\/span> Subject<\/span> {<\/span>\n  constructor<\/span>()<\/span> {<\/span>\n    this<\/span>.<\/span>observers<\/span> =<\/span> [];<\/span>\n  }<\/span>\n\n  subscribe<\/span>(<\/span>observer<\/span>)<\/span> {<\/span>\n    this<\/span>.<\/span>observers<\/span>.<\/span>push<\/span>(<\/span>observer<\/span>);<\/span>\n  }<\/span>\n\n  unsubscribe<\/span>(<\/span>observer<\/span>)<\/span> {<\/span>\n    this<\/span>.<\/span>observers<\/span> =<\/span> this<\/span>.<\/span>observers<\/span>.<\/span>filter<\/span>(<\/span>obs<\/span> =><\/span> obs<\/span> !==<\/span> observer<\/span>);<\/span>\n  }<\/span>\n\n  notify<\/span>(<\/span>data<\/span>)<\/span> {<\/span>\n    this<\/span>.<\/span>observers<\/span>.<\/span>forEach<\/span>(<\/span>observer<\/span> =><\/span> observer<\/span>.<\/span>update<\/span>(<\/span>data<\/span>));<\/span>\n  }<\/span>\n}<\/span>\n\nclass<\/span> Observer<\/span> {<\/span>\n  update<\/span>(<\/span>data<\/span>)<\/span> {<\/span>\n    console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>Observer received data:<\/span>'<\/span>,<\/span> data<\/span>);<\/span>\n  }<\/span>\n}<\/span>\n\nconst<\/span> subject<\/span> =<\/span> new<\/span> Subject<\/span>();<\/span>\nconst<\/span> observer1<\/span> =<\/span> new<\/span> Observer<\/span>();<\/span>\nconst<\/span> observer2<\/span> =<\/span> new<\/span> Observer<\/span>();<\/span>\n\nsubject<\/span>.<\/span>subscribe<\/span>(<\/span>observer1<\/span>);<\/span>\nsubject<\/span>.<\/span>subscribe<\/span>(<\/span>observer2<\/span>);<\/span>\n\nsubject<\/span>.<\/span>notify<\/span>(<\/span>'<\/span>Hello, observers!<\/span>'<\/span>);<\/span>\n<\/code><\/pre>\n
\n
\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0647\u0646\u06af\u0627\u0645 \u0633\u0627\u062e\u062a \u0631\u0627\u0628\u0637 \u0647\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u06cc \u067e\u06cc\u0686\u06cc\u062f\u0647 \u06cc\u0627 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0639\u0645\u0644\u06cc\u0627\u062a \u0646\u0627\u0647\u0645\u0632\u0645\u0627\u0646 \u0645\u0641\u06cc\u062f \u0627\u0633\u062a.<\/p>\n
\u0627\u0644\u06af\u0648\u06cc \u06a9\u0627\u0631\u062e\u0627\u0646\u0647 \u06cc\u06a9 \u0627\u0644\u06af\u0648\u06cc \u0627\u06cc\u062c\u0627\u062f\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0646 \u0627\u063a\u0644\u0628 \u062f\u0631 \u0645\u0648\u0627\u0642\u0639\u06cc \u06a9\u0647 \u0646\u06cc\u0627\u0632 \u0628\u0647 \u0627\u06cc\u062c\u0627\u062f \u0627\u0634\u06cc\u0627\u0621 \u0628\u062f\u0648\u0646 \u0645\u0634\u062e\u0635 \u06a9\u0631\u062f\u0646 \u06a9\u0644\u0627\u0633 \u062f\u0642\u06cc\u0642 \u0622\u0646\u0647\u0627 \u062f\u0627\u0631\u0645\u060c \u0627\u0632 \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u0645. \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0631\u0627\u0647\u06cc \u0628\u0631\u0627\u06cc \u0648\u0627\u06af\u0630\u0627\u0631\u06cc \u0645\u0646\u0637\u0642 \u0646\u0645\u0648\u0646\u0647 \u0633\u0627\u0632\u06cc \u0628\u0647 \u06a9\u0644\u0627\u0633 \u0647\u0627\u06cc \u06a9\u0648\u062f\u06a9 \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u062f\u0647\u062f. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0645\u062b\u0627\u0644\u06cc \u0627\u0632 \u0646\u062d\u0648\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u0644\u06af\u0648\u06cc \u06a9\u0627\u0631\u062e\u0627\u0646\u0647 \u0622\u0648\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a:<\/p>\n
\n
class<\/span> Car<\/span> {<\/span>\n  constructor<\/span>(<\/span>options<\/span>)<\/span> {<\/span>\n    this<\/span>.<\/span>doors<\/span> =<\/span> options<\/span>.<\/span>doors<\/span> ||<\/span> 4<\/span>;<\/span>\n    this<\/span>.<\/span>state<\/span> =<\/span> options<\/span>.<\/span>state<\/span> ||<\/span> '<\/span>brand new<\/span>'<\/span>;<\/span>\n    this<\/span>.<\/span>color<\/span> =<\/span> options<\/span>.<\/span>color<\/span> ||<\/span> '<\/span>white<\/span>'<\/span>;<\/span>\n  }<\/span>\n}<\/span>\n\nclass<\/span> Truck<\/span> {<\/span>\n  constructor<\/span>(<\/span>options<\/span>)<\/span> {<\/span>\n    this<\/span>.<\/span>wheels<\/span> =<\/span> options<\/span>.<\/span>wheels<\/span> ||<\/span> 6<\/span>;<\/span>\n    this<\/span>.<\/span>state<\/span> =<\/span> options<\/span>.<\/span>state<\/span> ||<\/span> '<\/span>used<\/span>'<\/span>;<\/span>\n    this<\/span>.<\/span>color<\/span> =<\/span> options<\/span>.<\/span>color<\/span> ||<\/span> '<\/span>blue<\/span>'<\/span>;<\/span>\n  }<\/span>\n}<\/span>\n\nclass<\/span> VehicleFactory<\/span> {<\/span>\n  createVehicle<\/span>(<\/span>options<\/span>)<\/span> {<\/span>\n    if <\/span>(<\/span>options<\/span>.<\/span>vehicleType<\/span> ===<\/span> '<\/span>car<\/span>'<\/span>)<\/span> {<\/span>\n      return<\/span> new<\/span> Car<\/span>(<\/span>options<\/span>);<\/span>\n    }<\/span> else<\/span> if <\/span>(<\/span>options<\/span>.<\/span>vehicleType<\/span> ===<\/span> '<\/span>truck<\/span>'<\/span>)<\/span> {<\/span>\n      return<\/span> new<\/span> Truck<\/span>(<\/span>options<\/span>);<\/span>\n    }<\/span>\n  }<\/span>\n}<\/span>\n\nconst<\/span> factory<\/span> =<\/span> new<\/span> VehicleFactory<\/span>();<\/span>\nconst<\/span> car<\/span> =<\/span> factory<\/span>.<\/span>createVehicle<\/span>({<\/span>\n  vehicleType<\/span>:<\/span> '<\/span>car<\/span>'<\/span>,<\/span>\n  doors<\/span>:<\/span> 2<\/span>,<\/span>\n  color<\/span>:<\/span> '<\/span>red<\/span>'<\/span>,<\/span>\n  state<\/span>:<\/span> '<\/span>used<\/span>'<\/span>\n});<\/span>\n\nconsole<\/span>.<\/span>log<\/span>(<\/span>car<\/span>);<\/span>\n<\/code><\/pre>\n
\n
\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0647\u0646\u06af\u0627\u0645 \u06a9\u0627\u0631 \u0628\u0627 \u0627\u0634\u06cc\u0627\u0621 \u067e\u06cc\u0686\u06cc\u062f\u0647 \u06cc\u0627 \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u0646\u0648\u0639 \u062f\u0642\u06cc\u0642 \u0634\u06cc \u0645\u0648\u0631\u062f \u0646\u06cc\u0627\u0632 \u062a\u0627 \u0632\u0645\u0627\u0646 \u0627\u062c\u0631\u0627 \u0645\u0634\u062e\u0635 \u0646\u06cc\u0633\u062a \u0645\u0641\u06cc\u062f \u0627\u0633\u062a.<\/p>\n
\u0627\u0644\u06af\u0648\u06cc \u0645\u0627\u0698\u0648\u0644 \u06cc\u06a9\u06cc \u0627\u0632 \u0627\u0644\u06af\u0648\u0647\u0627\u06cc \u0645\u0648\u0631\u062f \u0639\u0644\u0627\u0642\u0647 \u0645\u0646 \u0628\u0631\u0627\u06cc \u06a9\u067e\u0633\u0648\u0644\u0647 \u06a9\u0631\u062f\u0646 \u06a9\u062f \u0648 \u062f\u0627\u062f\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0631\u0648\u0634\u06cc \u0631\u0627 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0633\u0637\u0648\u062d \u062f\u0633\u062a\u0631\u0633\u06cc \u062e\u0635\u0648\u0635\u06cc \u0648 \u0639\u0645\u0648\u0645\u06cc \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u0628\u0647 \u0633\u0627\u0632\u0645\u0627\u0646\u062f\u0647\u06cc \u06a9\u062f \u062f\u0631 \u0642\u0633\u0645\u062a \u0647\u0627\u06cc \u062a\u0645\u06cc\u0632 \u0648 \u062c\u062f\u0627 \u06a9\u0645\u06a9 \u0645\u06cc \u06a9\u0646\u062f. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0646\u062d\u0648\u0647 \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0627\u0644\u06af\u0648\u06cc \u0645\u0627\u0698\u0648\u0644 \u0628\u0647 \u0627\u06cc\u0646 \u0635\u0648\u0631\u062a \u0627\u0633\u062a:<\/p>\n
\n
const<\/span> MyModule<\/span> =<\/span> (<\/span>function<\/span>()<\/span> {<\/span>\n  \/\/ Private variables and functions<\/span>\n  let<\/span> privateVariable<\/span> =<\/span> '<\/span>I am private<\/span>'<\/span>;<\/span>\n  function<\/span> privateFunction<\/span>()<\/span> {<\/span>\n    console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>This is a private function<\/span>'<\/span>);<\/span>\n  }<\/span>\n\n  \/\/ Public API<\/span>\n  return<\/span> {<\/span>\n    publicVariable<\/span>:<\/span> '<\/span>I am public<\/span>'<\/span>,<\/span>\n    publicFunction<\/span>:<\/span> function<\/span>()<\/span> {<\/span>\n      console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>This is a public function<\/span>'<\/span>);<\/span>\n      privateFunction<\/span>();<\/span>\n    }<\/span>\n  };<\/span>\n})();<\/span>\n\nconsole<\/span>.<\/span>log<\/span>(<\/span>MyModule<\/span>.<\/span>publicVariable<\/span>);<\/span>\nMyModule<\/span>.<\/span>publicFunction<\/span>();<\/span>\nconsole<\/span>.<\/span>log<\/span>(<\/span>MyModule<\/span>.<\/span>privateVariable<\/span>);<\/span> \/\/ undefined<\/span>\n<\/code><\/pre>\n
\n
\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0645\u0627\u0698\u0648\u0644 \u0647\u0627\u06cc \u06a9\u062f \u0645\u0633\u062a\u0642\u0644 \u0628\u0627 \u0631\u0627\u0628\u0637 \u0647\u0627\u06cc \u0648\u0627\u0636\u062d \u0628\u0633\u06cc\u0627\u0631 \u0639\u0627\u0644\u06cc \u0627\u0633\u062a.<\/p>\n
\u0627\u0644\u06af\u0648\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0627\u0644\u06af\u0648\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0627\u0634\u06cc\u0627\u0621 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0627\u0644\u06af\u0648\u06cc \u06cc\u06a9 \u0634\u06cc \u0645\u0648\u062c\u0648\u062f \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0634\u0628\u06cc\u0647 \u0633\u0627\u0632\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u0645. \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0632\u0645\u0627\u0646\u06cc \u0645\u0641\u06cc\u062f \u0627\u0633\u062a \u06a9\u0647 \u0627\u06cc\u062c\u0627\u062f \u0634\u06cc \u06af\u0631\u0627\u0646 \u0627\u0633\u062a \u0648 \u0627\u0634\u06cc\u0627\u0621 \u0645\u0634\u0627\u0628\u0647 \u0645\u0648\u0631\u062f \u0646\u06cc\u0627\u0632 \u0627\u0633\u062a. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u06cc\u06a9 \u0645\u062b\u0627\u0644 \u0627\u0633\u062a:<\/p>\n
\n
const<\/span> vehiclePrototype<\/span> =<\/span> {<\/span>\n  init<\/span>:<\/span> function<\/span>(<\/span>model<\/span>)<\/span> {<\/span>\n    this<\/span>.<\/span>model<\/span> =<\/span> model<\/span>;<\/span>\n  },<\/span>\n  getModel<\/span>:<\/span> function<\/span>()<\/span> {<\/span>\n    console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>The model of this vehicle is <\/span>'<\/span> +<\/span> this<\/span>.<\/span>model<\/span>);<\/span>\n  }<\/span>\n};<\/span>\n\nfunction<\/span> vehicle<\/span>(<\/span>model<\/span>)<\/span> {<\/span>\n  function<\/span> F<\/span>()<\/span> {}<\/span>\n  F<\/span>.<\/span>prototype<\/span> =<\/span> vehiclePrototype<\/span>;<\/span>\n\n  const<\/span> f<\/span> =<\/span> new<\/span> F<\/span>();<\/span>\n  f<\/span>.<\/span>init<\/span>(<\/span>model<\/span>);<\/span>\n  return<\/span> f<\/span>;<\/span>\n}<\/span>\n\nconst<\/span> car<\/span> =<\/span> vehicle<\/span>(<\/span>'<\/span>Honda<\/span>'<\/span>);<\/span>\ncar<\/span>.<\/span>getModel<\/span>();<\/span>\n<\/code><\/pre>\n
\n
\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0627\u0645\u06a9\u0627\u0646 \u0627\u06cc\u062c\u0627\u062f \u0627\u0634\u06cc\u0627\u0621 \u062c\u062f\u06cc\u062f \u0628\u0627 \u06cc\u06a9 \u0646\u0645\u0648\u0646\u0647 \u0627\u0648\u0644\u06cc\u0647 \u062e\u0627\u0635 \u0631\u0627 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u06a9\u0627\u0631\u0622\u0645\u062f\u062a\u0631 \u0627\u0632 \u0627\u06cc\u062c\u0627\u062f \u0627\u0634\u06cc\u0627\u0621 \u062c\u062f\u06cc\u062f \u0627\u0632 \u0627\u0628\u062a\u062f\u0627 \u0628\u0627\u0634\u062f.<\/p>\n
\u0647\u0646\u06af\u0627\u0645 \u067e\u06cc\u0627\u062f\u0647\u200c\u0633\u0627\u0632\u06cc \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648\u0647\u0627 \u062f\u0631 \u067e\u0631\u0648\u0698\u0647\u200c\u0647\u0627\u06cc\u0645\u060c \u0645\u062a\u0648\u062c\u0647 \u0634\u062f\u0645 \u06a9\u0647 \u0633\u0627\u0632\u0645\u0627\u0646\u200c\u062f\u0647\u06cc \u06a9\u062f \u0648 \u0642\u0627\u0628\u0644\u06cc\u062a \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0622\u0646\u200c\u0647\u0627 \u0631\u0627 \u0628\u0647\u200c\u0637\u0648\u0631 \u0686\u0634\u0645\u06af\u06cc\u0631\u06cc \u0628\u0647\u0628\u0648\u062f \u0645\u06cc\u200c\u0628\u062e\u0634\u0646\u062f. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u0627\u0644\u06af\u0648\u06cc Singleton \u062f\u0631 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0648\u0636\u0639\u06cc\u062a \u062c\u0647\u0627\u0646\u06cc \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u062f\u06cc \u062f\u0631 \u0645\u0642\u06cc\u0627\u0633 \u0628\u0632\u0631\u06af \u0628\u0633\u06cc\u0627\u0631 \u0627\u0631\u0632\u0634\u0645\u0646\u062f \u0628\u0648\u062f\u0647 \u0627\u0633\u062a. \u0645\u0646 \u0627\u0632 \u0622\u0646 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0627\u0634\u06cc\u0627\u0621 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u06a9\u0647 \u0628\u0627\u06cc\u062f \u062f\u0631 \u0633\u0631\u0627\u0633\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0628\u0647 \u0622\u0646\u0647\u0627 \u062f\u0633\u062a\u0631\u0633\u06cc \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0647 \u0627\u0645.<\/p>\n
\u0627\u0644\u06af\u0648\u06cc Observer \u0628\u0647 \u0648\u06cc\u0698\u0647 \u062f\u0631 \u0633\u0627\u062e\u062a \u0631\u0627\u0628\u0637 \u0647\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u06cc \u0648\u0627\u06a9\u0646\u0634\u06cc \u0645\u0641\u06cc\u062f \u0628\u0648\u062f\u0647 \u0627\u0633\u062a. \u062f\u0631 \u06cc\u06a9 \u067e\u0631\u0648\u0698\u0647\u060c \u0645\u0646 \u0627\u0632 \u0622\u0646 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 \u0633\u06cc\u0633\u062a\u0645 \u0627\u0639\u0644\u0627\u0646 \u0628\u0644\u0627\u062f\u0631\u0646\u06af \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0645 \u06a9\u0647 \u062f\u0631 \u0622\u0646 \u0686\u0646\u062f\u06cc\u0646 \u0645\u0624\u0644\u0641\u0647 \u0628\u0627\u06cc\u062f \u0628\u0647\u200c\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0645\u06cc\u200c\u0634\u062f\u0646\u062f \u06a9\u0647 \u062f\u0627\u062f\u0647\u200c\u0647\u0627\u06cc \u062c\u062f\u06cc\u062f \u0627\u0632 \u0633\u0631\u0648\u0631 \u062f\u0631\u06cc\u0627\u0641\u062a \u0645\u06cc\u200c\u0634\u062f.<\/p>\n
Factory Pattern \u062f\u0631 \u0633\u0646\u0627\u0631\u06cc\u0648\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0645\u0646 \u0646\u06cc\u0627\u0632 \u0628\u0647 \u0627\u06cc\u062c\u0627\u062f \u0627\u0646\u0648\u0627\u0639 \u0645\u062e\u062a\u0644\u0641 \u0627\u0634\u06cc\u0627\u0621 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0648\u0631\u0648\u062f\u06cc \u06cc\u0627 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u06a9\u0627\u0631\u0628\u0631 \u062f\u0627\u0634\u062a\u0645\u060c \u0627\u0631\u0632\u0634 \u062e\u0648\u062f \u0631\u0627 \u062b\u0627\u0628\u062a \u06a9\u0631\u062f\u0647 \u0627\u0633\u062a. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u062f\u0631 \u06cc\u06a9 \u0633\u06cc\u0633\u062a\u0645 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0645\u062d\u062a\u0648\u0627\u060c \u0645\u0646 \u0627\u0632 \u06cc\u06a9 \u06a9\u0627\u0631\u062e\u0627\u0646\u0647 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0627\u0646\u0648\u0627\u0639 \u0645\u062e\u062a\u0644\u0641 \u0639\u0646\u0627\u0635\u0631 \u0645\u062d\u062a\u0648\u0627 (\u0645\u062a\u0646\u060c \u062a\u0635\u0648\u06cc\u0631\u060c \u0648\u06cc\u062f\u0626\u0648) \u0628\u0631 \u0627\u0633\u0627\u0633 \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0627\u0631\u0628\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0645.<\/p>\n
\u0627\u0644\u06af\u0648\u06cc \u0645\u0627\u0698\u0648\u0644 \u0631\u0627\u0647 \u062d\u0644 \u0627\u0635\u0644\u06cc \u0645\u0646 \u0628\u0631\u0627\u06cc \u0633\u0627\u0632\u0645\u0627\u0646\u062f\u0647\u06cc \u06a9\u062f \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc \u0628\u0632\u0631\u06af\u062a\u0631 \u0628\u0648\u062f\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0628\u0647 \u0645\u0646 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u0645\u0627\u0698\u0648\u0644 \u0647\u0627\u06cc \u0645\u0633\u062a\u0642\u0644 \u0628\u0627 \u0631\u0627\u0628\u0637 \u0647\u0627\u06cc \u0648\u0627\u0636\u062d \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u0645\u060c \u06a9\u0647 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u0631\u0627 \u0622\u0633\u0627\u0646 \u062a\u0631 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u0627\u0632 \u062a\u062f\u0627\u062e\u0644 \u0646\u0627\u0645\u06af\u0630\u0627\u0631\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n
\u0627\u0644\u06af\u0648\u06cc \u0627\u0648\u0644\u06cc\u0647 \u062f\u0631 \u0633\u0646\u0627\u0631\u06cc\u0648\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0645\u0646 \u0646\u06cc\u0627\u0632 \u0628\u0647 \u0627\u06cc\u062c\u0627\u062f \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0627\u0634\u06cc\u0627\u0621 \u0645\u0634\u0627\u0628\u0647 \u062f\u0627\u0634\u062a\u0645 \u0645\u0641\u06cc\u062f \u0628\u0648\u062f\u0647 \u0627\u0633\u062a. \u062f\u0631 \u06cc\u06a9 \u067e\u0631\u0648\u0698\u0647 \u062a\u0648\u0633\u0639\u0647 \u0628\u0627\u0632\u06cc\u060c \u0645\u0646 \u0627\u0632 \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u06a9\u0627\u0631\u0622\u0645\u062f \u0646\u0645\u0648\u0646\u0647\u200c\u0647\u0627\u06cc \u0645\u062a\u0639\u062f\u062f\u06cc \u0627\u0632 \u0645\u0648\u062c\u0648\u062f\u06cc\u062a\u200c\u0647\u0627\u06cc \u0628\u0627\u0632\u06cc \u0628\u0627 \u0631\u0641\u062a\u0627\u0631 \u0645\u0634\u062a\u0631\u06a9 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0645.<\/p>\n
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