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Данная статья является вторым изданием обзорной лекции JavaScript. Ядро, посвященной языку программирования ECMAScript, и ключевым компонентам его рантайм-системы.
Funarg
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JavaScript. The Core: 2nd Edition
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This is the second edition of the JavaScript. The Core overview lecture, devoted to ECMAScript programming language and core components of its runtime system.
Note: see also Essentials of Interpretation course, where we build a programming language similar to JavaScript, from scratch.
ECMA-262-5 in detail. Chapter 3.1. Lexical environments: Common Theory.
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Introduction
In this chapter we’ll talk in detail about lexical environments — a mechanism used in some languages to manage the static scoping. In order to understand this concept completely, we’ll also discuss briefly the alternative — dynamic scoping (which though isn’t used directly in ECMAScript). We’ll see how environments help to manage lexically nested structures of a code and to provide complete support of closures. Continue reading
ECMA-262-3 in detail. Chapter 6. Closures.
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Introduction
In this article we will talk about one of the most discussed topics related to JavaScript — about closures. The topic, as a matter of fact, is not new and was discussed many times. However we will try to discuss and understand it more from a theoretical viewpoint, and also will look at how closures are implemented in ECMAScript.
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Тонкости ECMA-262-3. Часть 6. Замыкания.
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Введение
В этой заметке мы поговорим об одной из наиболее обсуждаемых тем, связанных с JavaScript — о замыканиях. Тема, по сути, избита; существует немалое количество статей, посвящённых этой структуре (некоторые из них очень хорошие, например, статья R. Cornford-a, представленная в списке дополнительной литературы), однако мы постараемся разобрать её более с теоретической точки зрения, и посмотрим, как замыкания в ECMAScript устроены изнутри.
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