JavaScript documentation status

by 4 contributors:

This page tries to track ongoing documentation work in the MDN JavaScript section. Feel free to contribute!

Summary

Pages No tags Needs* tags Missing tags Editorial reviews Technical reviews Outdated pages Dev-doc-needed bugs Documentation requests
706 0 (0%) 5 (1%) 0 (0%) 0 (0%) 2 (1%) 0 (0%) 19 (3%) 7 (1%)

See also localization status of this section.

Needs* tags

Found 5 pages. Learn more about how to deal with meta-tags.

Technical reviews

Found 2 pages. Learn more about how to do a technical review.

Dev-doc-needed bugs

Found 19 bugs. Learn more about how to resolve a dev-doc-needed bug.

Bug Summary Release
1070767 Enable {Array, %TypedArray%}.prototype.includes in all builds mozilla43
1175394 Mapped arguments object should only be created when its FormalParameters is a SimpleParameterList mozilla43
889158 Calling an arrow function shouldn't create an 'arguments' binding mozilla43
1198453 Make ES7 Exponentiation Nightly-only pending spec discussions. mozilla43
1133298 'arguments' is allowed even with rest-parameters mozilla43
1192412 Class constructor's name should be class name. mozilla43
1150297 Move source property to RegExp instance again. ---
1141994 Implement Atomics.isLockFree mozilla42
1141986 Implement Atomics.exchange mozilla42
1141865 Implement ES6 NewTarget mozilla41
866301 Enable ECMAScript Internationalization API for Firefox OS mozilla40
979594 Atomics and locks for SharedArrayBuffer: Plain JS mozilla36
1054882 Make SharedArrayBuffer not a subtype of ArrayBuffer; fork TypedArray hierarchy mozilla35
933001 Land SharedArrayBuffer Prototype Preffed-Off mozilla30
922172 Add redimension method for typed objects mozilla28
922115 Support unsized arrays in typed objects mozilla28
917454 [typed objs] Add objectType function mozilla28
914220 Move TypedObject names into a "TypedObject" quasi-module mozilla27
898342 [binary data] add support for binary data handles mozilla27

Browse as bug list.

Documentation requests

Found 7 bugs. Documentation request bugs can contain various kinds work related to MDN pages. Read through the bug and ask questions in the bug if in doubt.

Bug Summary
1179881 Write a JS error reference
1186432 Reserved keyword `default`'s hyperlink points to `switch` page
1188986 Promise.all example is very hard to understand
1192215 Add docs listing the differences between each of the major ECMAScript versions
1198429 document smart/memoized/self-overwriting getter
1199435 Documentation for ES6 class needs English correction
1201380 Examples and text don't match up in "details of the object model" page

Browse as bug list.

Localizations

Please help us to localize this documentation into different languages. Read more about how to translate.

Language Pages Translated Translations up to date
bn-BD 706 32 (4%) 6 (18%)
ca 706 186 (26%) 76 (40%)
de 706 159 (22%) 46 (28%)
es 706 222 (31%) 33 (14%)
fa 706 8 (1%) 0 (0%)
fr 706 706 (100%) 703 (99%)
it 706 51 (7%) 10 (19%)
ja 706 690 (97%) 75 (10%)
ko 706 78 (11%) 14 (17%)
pl 706 250 (35%) 12 (4%)
pt-BR 706 149 (21%) 33 (22%)
ru 706 446 (63%) 34 (7%)
zh-CN 638 391 (61%) 172 (43%)
zh-TW 628 29 (4%) 2 (6%)

Structure of the MDN JavaScript docs

All reference pages should have a consistent structure with information about browser compatibility, specification status, examples, introduction texts, proper tagging and formatting (content hierarchies, no links to redirects). Integrating the quicklinks navigation is also part of this update. Going through these pages can then help to identify gaps in our reference material and find pages in need of further updating for ES 5.1 and 6.

Chapters of the MDN JavaScript section and their status
# Chapter Pages Priority Notes
0 Value & function properties in the global scope 16 1 Complete.
1 Object 40 1

Complete.
Missing pages for ES7: Object.unobserve(), Object.getNotifier(), Object.deliverChangeRecords(), ES7, in v8

2 Function 14 1 Complete.
3 Array 38 1 Complete.

Missing pages for ES7: Array.unobserve(), ES7, in v8

4 String 50 1 Complete.
5 Boolean 5 1 Complete.
6 Number 24 1

Complete.

7 Math 44 1 Complete.
8 Date 53 1 Complete.
9 RegExp 21 1 Complete.
10

Error
EvalError
InternalError
RangeError
ReferenceError
SyntaxError
TypeError
URIError

24 4 Complete.
11 JSON 3 1 Complete.
12 Intl
Intl.Collator
Intl.DateTimeFormat
Intl.NumberFormat
16 2 Complete.
13 Map 13 2 Complete.
14 WeakMap 7 2 Complete.
15 Set 11 2 Complete.
16 SIMD

float32x4
float64x2
int8x16
int16x8
int32x4
SIMD types

53 3 In Nightly. Spec in flux.
17 WeakSet 6 2 Complete.
18 Proxy 17 3 Complete.
19 Reflect 1 (+14) 3 Sub pages missing (14 methods).
20 Generator (legacy and ES6)
Iterator
StopIteration
GeneratorFunction
8 2 Complete.
21 ArrayBuffer (6)
DataView (21)
TypedArray (34 [+ 3])
Float32Array
Float64Array
Int16Array
Int32Array
Int8Array
Uint16Array
Uint32Array
Uint8Array
Uint8ClampedArray
70 (+3) 2 Missing pages:
  • 3 standard Array methods not yet implemented for TypedArrays (tracking bug 1071668).
22 Promise 8 1 Complete.
23 Symbol 9 2

Missing pages:

  • Well-known symbols
    • Symbol.hasInstance
    • Symbol.isConcatSpreadable
    • Symbol.replace
    • Symbol.search
    • Symbol.species
    • Symbol.split
    • Symbol.toPrimitive
    • Symbol.toStringTag
    • Symbol.unscopables
24 ParallelArray 1 5 Complete.
25 Expressions & Operators 29 1 Complete.
26 Statements & Declarations 27 1 Needs ES6 update:
27 Functions 11 1

Complete.

28 Classes 4 1 WIP, Fx implementation in progress
29 JavaScript Guide 15 1
  1. Introduction
  2. Grammar and types
  3. Control flow and error handling
  4. Loops and iteration
  5. Functions
  6. Expressions and operators
  7. Numbers and dates
  8. Text formatting
  9. Regular Expressions
  10. Indexed collections
  11. Keyed collections
  12. Working with objects
  13. Details of the object model
  14. Iterators and generators
  15. Meta programming
30 New in JavaScript 15 4

Complete.

31 Articles/Tutorials/Misc 17
 
3
32 Meta pages 9 4

Notes

New chapters to be written

# Chapter Pages Priority Notes
1 Typed objects 0 5 In Nightly. https://github.com/dslomov-chromium/typed-objects-es7
2 SharedArrayBuffer and Shared*Array types 0 5 In Nightly.

Other tasks to do

  • asm.js explanation doc ?
  • Go through Firefox release notes for developers and site compat notes and make sure JS changes are documented properly in the references.
  • Make sure our compat tables are up to date by also going trough bug trackers of other open source browsers (e.g. WebKit, Blink)
  • Write a changelog for Chrome JavaScript releases like we have for Firefox. Same for other browsers/node.js?
  • Meta article about how to document in the JS MDN area.
  • Create a page that explains error messages (v8). So that people searching for errors will find guidance.

Tagging standard

  • For all pages at least the tag "JavaScript" should be added.
  • For methods belonging to an object it the name of the Object should be added (e.g. String.fromCharCode should have "String").
  • Methods should have "Method" and properties need a "Property" tag. All prototype methods have the "prototype" tag.
  • Features added in a new ECMAScript version have a "ECMAScript6" plus "Experimental".
  • Deprecated and obsolete features have the same named tags.
  • If pages need any type of work, a "Need*" tag should be added (see above).

Specifications

The following specifications are taken under consideration for this project:

Specification Status
ECMAScript 5.1 (ECMA-262) Standard
ECMAScript 2015 (6th Edition, ECMA-262) Standard
ECMAScript Internationalization API 1.0 (ECMA-402) Standard
ECMAScript Internationalization API 2.0 (ECMA-402) Standard

Help the 'JavaScript' documentation project…
Topic driver : Florian Scholz (IRC nickname: fscholz)
Look at the current status of the 'JavaScript' documentation.
Don't hesitate to contact us on #mdn or on the dev-mdc mailing-list:

Document Tags and Contributors

Contributors to this page: fscholz, Havvy, Sheppy, jswisher
Last updated by: fscholz,
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