# 2.1. The Factory Pattern (ok) Hướng dẫn: C:\xampp\htdocs\php\text.html ``` C:\xampp\htdocs\php\js\factory\init.js return { init: function() {} } C:\xampp\htdocs\php\js\factory\mediaFactory.js return { createMedia: function(type, attributes) {} } C:\xampp\htdocs\php\js\factory\image.js var Image = function(attributes) {} C:\xampp\htdocs\php\js\factory\video.js var Video = function(attributes) {} ``` ![](/files/-MTAmVhFtJWWCZCUib0n) C:\xampp\htdocs\php\package.json ``` { "name": "php", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1" }, "keywords": [], "author": "", "license": "ISC" } ``` C:\xampp\htdocs\php\bower.json ``` { "name": "php", "description": "", "main": "index.js", "authors": [ "phamngoctuong " ], "license": "ISC", "homepage": "", "private": true, "ignore": [ "**/.*", "node_modules", "bower_components", "test", "tests" ], "devDependencies": { "requirejs": "^2.3.6" } } ``` C:\xampp\htdocs\php\\.gitignore ``` bower_components node_modules ``` C:\xampp\htdocs\php\index.html ``` Put JavaScript Design Patterns into Practice

Put JavaScript Design Patterns into Practice

by Dan Wellman

``` C:\xampp\htdocs\php\js\factory\init.js ``` define(function(require) { 'use strict'; return { init: function() { var mediaFactory = require('factory/mediaFactory'); var myVideo = mediaFactory.createMedia('Video', { length: 3.5, name: 'My video' }); var myImage = mediaFactory.createMedia('Image', { width: 100, height: 100, name: 'My image' }); console.log(myVideo); console.log(myImage); } }; }); ``` C:\xampp\htdocs\php\js\factory\mediaFactory.js ``` define(function(require) { 'use strict'; var media = { Video: require('factory/video'), Image: require('factory/image') }; return { createMedia: function(type, attributes) { var MediaType = media[type]; return new MediaType(attributes); } }; }); ``` C:\xampp\htdocs\php\js\factory\video.js ``` define(function() { 'use strict'; var Video = function(attributes) { this.length = attributes.length || 0; this.name = attributes.name || ''; }; return Video; }); ``` C:\xampp\htdocs\php\js\factory\image.js ``` define(function() { 'use strict'; var Image = function(attributes) { this.width = attributes.width || 0; this.height = attributes.height || 0; this.name = attributes.name || ''; }; return Image; }); ``` C:\xampp\htdocs\php\js\main.js ``` require( ['factory/init'], function (factory) { 'use strict'; var examples = { factory: factory }; window.runExample = function (example) { examples[example].init(); }; runExample('factory'); } ); ``` Hoặc ``` require( ['factory/init'], function (init) { 'use strict'; var examples = { factory: init }; for (let key in examples) { examples[key].init(key); } } ); ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://javascriptuse.gitbook.io/advanced/2.1.-the-factory-pattern-ok.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.