Estandar 262 - ecma script

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ECMA-262
5th Edition / December 2009

ECMAScript Language Specification

Reference number ECMA-123:2009

© Ecma International 2009

COPYRIGHT PROTECTED DOCUMENT

© Ecma International 2009

Contents

Page

Introduction ....................................................................................................................................................... vii1  2  3  4  4.1  4.2  4.2.1  4.2.2  4.3  5  5.1  5.1.1  5.1.2  5.1.3  5.1.4  5.1.5  5.1.6  5.2  6  7  7.1  7.2  7.3  7.4  7.5  7.6  7.6.1  7.7  7.8  7.8.1  7.8.2  7.8.3  7.8.4  7.8.5  7.9  7.9.1  7.9.2  8  8.1  8.2  8.3  8.4  8.5  8.6  8.6.1  8.6.2  8.7  Scope...................................................................................................................................................... 1  Conformance ......................................................................................................................................... 1  Normative references ............................................................................................................................ 1  Overview................................................................................................................................................. 1  Web Scripting ........................................................................................................................................ 2  Language Overview ............................................................................................................................... 2 Objects.................................................................................................................................................... 3  The Strict Variant of ECMAScript ........................................................................................................ 4  Definitions.............................................................................................................................................. 4  Notational Conventions ........................................................................................................................ 7  Syntactic and Lexical Grammars ......................................................................................................... 7  Context-Free Grammars....................................................................................................................... 7  The Lexical and RegExp Grammars .................................................................................................... 8  The Numeric String Grammar .............................................................................................................. 8  The SyntacticGrammar ........................................................................................................................ 8  The JSON Grammar .............................................................................................................................. 9  Grammar Notation................................................................................................................................. 9  Algorithm Conventions ....................................................................................................................... 11  Source Text .......................................................................................................................................... 12  LexicalConventions............................................................................................................................ 13  Unicode Format-Control Characters ................................................................................................. 14  White Space ......................................................................................................................................... 14  Line Terminators...
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