My recent playground was the toy Scheme interpreter written in CoffeeScript. In the chapter of the metacircular evaluator of the SICP book, there is a section — 4.1.6 Internal Definitions suggesting to solve one interesting and subtle issue related with the (inner) definitions of functions.
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Данная обзорная лекция является обобщением того, что мы изучили в курсе “Тонкости ECMA-262-3“. Каждый раздел статьи содержит ссылки на соответствующие главы цикла ES3, который вы, в случае желания и интереса, можете рассмотреть подробно, получив более глубокие и детальные описания тем.
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This note is an overview and summary of the “ECMA-262-3 in detail” series. Every section contains references to the appropriate matching chapters so you can read them to get a deeper understanding.
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Introduction

In this chapter we will concentrate on another innovation of the ECMA-262-5. The topic of the discussion is a strict variant (or strict mode) of an ECMAScript program. We’ll discuss the reasons for providing this feature, how it affects on some already existing semantic aspects and what can it restrict.
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Introduction

This chapter is devoted generally to one of new concepts of the ECMA-262-5 specification — to property attributes and mechanism of their handling — property descriptors.

Usually saying that “an object has some property” we mean an association between a property name and its value. But as we know from the ES3 analysis, a property structure is more complex than just a string name. It also has set of attributes — those which we already discussed in ES3, e.g. {ReadOnly}, {DontEnum} and other. So from this viewpoint a property is as an object itself.
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We have finished analysis of the most important parts and theoretical aspects concerning 3rd edition of the ECMA-262 specification, i.e. standard devoted ECMAScript programming language. We have done and achieved a lot. Originally written in Russian, this series after more than half an year has been translated to several languages, what allowed this information to be shared with JavaScript developers and with everyone who interested in deep ECMAScript allover the world.
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Introduction

In this small note we will consider strategy of passing arguments to functions in ECMAScript.

Generally this section of a computer science is called evaluation strategy, i.e. set of rules for evaluation and calculation some expressions in programming language. Strategy of passing arguments to function is its special case.
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Introduction

In this article we will talk about one of the general ECMAScript objects — about functions. In particular, we will go through various types of functions, will define how each type influences variables object of a context and what is contained in the scope chain of each function.
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Introduction

As we already know from the second chapter concerning the variable object, the data of an execution context (variables, function declarations, and formal parameters of functions) are stored as properties of the variables object.
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Introduction

Always in programs we declare functions and variables which then successfully use building our systems. But how and where the interpreter finds our data (functions, variable)? What occurs, when we reference to needed objects?
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