What are the small and fast javascript OOP libraries. Which allow you to create classes, inherit from them? In such a style.

// объявляСм класс Lib.defineClass('имя_класса' ,{ extend: 'Ρ€ΠΎΠ΄ΠΈΡ‚Π΅Π»ΡŒΡΠΊΠΈΠΉ_класс', // наслСдуСмся ΠΎΡ‚ Ρ€ΠΎΠ΄ΠΈΡ‚Π΅Π»ΡŒΡΠΊΠΈΠΉ_класс myProp: [1,2] }); // Π‘ΠΎΠ·Π΄Π°Ρ‘ΠΌ экзСмпляр(ΠΎΠ±ΡŠΠ΅ΠΊΡ‚) класса с Ρ‚ΠΈΠΏΠΎΠΌ имя_класса, замСняя свойство myProp. var cls = Lib.createClass('имя_класса' ,{ myProp: [1,2,3,4], myProp2: 'свойство экзСмпляра класса' }); cls.myProp[0]; // 1 Lib.имя_класса; // созданный класс доступСн ΠΊΠ°ΠΊ ΠΎΠ±ΡŠΠ΅ΠΊΡ‚ Π³Π΄Π΅ Π½ΠΈΠ±ΡƒΠ΄ΡŒ. Lib.имя_класса.myProp[0]; // 1

Closed due to the fact that it is necessary to reformulate the question so that it was possible to give an objectively correct answer by the participants Grundy , aleksandr barakin , VenZell , Streletz , insolor May 27 '16 at 10:23 .

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  • how much should the library be small and how fast? What happens in the given piece of code? What is not satisfied with the native implementation? - Grundy
  • I need the same implementation as in Ext js. But in order for the file to weigh not 1 mb, and not more than 30 kb, and not be inhibited. An example added. First we declare a class, then we create a class object, then we access its property. - manking
  • The smallest 0 kilobyte is Object.create . - Aleksei Zabrodskii
  • Dean Edwards's Base Library - Alex Krass

2 answers 2

In fact, you do n’t need third-party libraries at all.

If you write ES6 code, you can use standard language tools:

 class Foo { constructor() { this.greeting = 'Hi all'; } sayHi() { console.log(this.greeting); } } class Bar extends Foo { sayHi() { console.log(this.greeting + ' from bar'); } }

If you still haven't started using ES6, then the function that emulates class inheritance takes up only (attention) 10 lines . I already described exactly how inheritance works in JavaScript here in this answer . And here I just give the code of the inheritance function:

 var inherits = function(ctor, superCtor) { ctor.prototype = Object.create(superCtor.prototype, { constructor: { value: ctor, enumerable: false, writable: true, configurable: true } }); }

Well, standard language tools are quite suitable for defining classes.

    It may be suitable JS.Class Or you can search for something else on www.microjs.com