JavaScript 2.0

Sunday, May 16, 1999

Introduction

JavaScript 2.0 is an experimental proposal maintained by waldemar for future changes in the JavaScript language. At this stage the emphasis is on developing the broad concepts of the language; many of the details will be worked out later. The eventual language may differ significantly from this proposal, but the goal is to move in the directions indicated here and do so via a coordinated plan rather than adding miscellaneous features ad hoc on a release-by-release basis.

Motivation
Notation
Overview
- Execution Model
- Declarations
- Types
- Variables
- Functions
- Classes
- Packages
- Versions
- Member Lookup
- Error Recovery
Standard Libraries
Optional Libraries
- Machine Types
- Operator Overloading
Details
Formal Description
- Grammar Notation
- Semantic Notation
- Lexer Grammar Summary (also available as Word 98 rtf)
- Lexer Grammar and Semantics (Word 98 rtf)
- Regular Expression Grammar Summary (also available as Word 98 rtf)
- Regular Expression Grammar and Semantics (Word 98 rtf)
- Parser Grammar Summary (Word 98 rtf)
Appendices
- Compatibility

Changes

The following are recent major changes in this document:

Date	Revisions
May 16, 1999	Added regular expression grammar and semantics.
May 12, 1999	Added preliminary Formal Description chapter.
Mar 25, 1999	Added Member Lookup page. Released second draft.
Mar 24, 1999	Added many clarifications, discussion sections, and small changes throughout the pages.
Mar 23, 1999	Rewrote Execution Model page and split it off from the Declarations page. Added discussion of `float` to Machine Types.
Mar 22, 1999	Removed numbered versions from the Versions page; added motivation, discussion, and version aliasing using `=`. Removed angle brackets `<` and `>` from `VersionsAndRenames`.
Mar 16, 1999	Rewrote Types page. Split off `byte`, `ubyte`, `short`, `ushort`, `int`, `uint`, `long`, `ulong` into an optional Machine Types library.
Feb 18, 1999	Released first draft.

Drafts

Older drafts are also available:

Waldemar Horwat
Last modified Sunday, May 16, 1999