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| Pages | No tags | Needs* tags | Missing tags | Editorial reviews | Technical reviews | Outdated pages | Dev-doc-needed bugs | Documentation requests |
|---|---|---|---|---|---|---|---|---|
| 804 | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) | 11 (2%) | 5 (1%) | 12 (2%) |
See also localization status of this section.
Outdated pages
Found 11 pages. These pages haven't been updated in over a year. Outdated pages can have problems with both content and format. Look at these pages and consider: Is this page talking about the Web of today? Does it look consistent with newer pages in this topic area? If not, make any needed changes.
- Function.caller
386 days old - Object.prototype.__count__
435 days old - Object.prototype.__parent__
435 days old - Object.prototype.eval()
435 days old - ParallelArray
435 days old - RegExp.input ($_)
433 days old - RegExp.lastMatch ($&)
433 days old - RegExp.lastParen ($+)
433 days old - RegExp.leftContext ($`)
433 days old - StopIteration
427 days old - for each...in
430 days old
Dev-doc-needed bugs
Found 5 bugs. Learn more about how to resolve a dev-doc-needed bug.
| Bug | Summary | Release |
|---|---|---|
| 1114580 | Implement ES6 Symbol.toStringTag | mozilla51 |
| 1121938 | Implement %TypedArray%.prototype.{toString, toLocaleString} | mozilla51 |
| 1204026 | Labelled generator declarations are invalid | --- |
| 950547 | Make let and const ES6-compatible | --- |
| 932080 | Support default values in destructuring | --- |
Browse as bug list.
Documentation requests
Found 12 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 |
| 1201380 | Examples and text don't match up in "details of the object model" page |
| 1204224 | Unclear explanation in "Working With Objects" tutorial |
| 1243496 | The function declaration and function expression documentation is incorrect |
| 1245977 | MathML fallback: square root is not displayed correctly |
| 1275816 | Explain how |this| value is calculated in call expression, and the difference between `foo[prop]()` and `func = foo[prop], func()` |
| 1281244 | the "window.open" documentation is outdated |
| 1281696 | iterating with let in for-loops |
| 1286628 | Object.prototype.constructor is not a reference to the constructor of the prototype |
| 1294338 | charCodeAt and codePointAt in String documentation seem almost backwards |
| 1299696 | Document Symbol.toStringTag |
| 1299898 | setTimeout Example could be simplified and show more info |
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 |
|---|---|---|---|
| af | 804 | 0 (0%) | 0 (0%) |
| bn-BD | 804 | 32 (3%) | 0 (0%) |
| ca | 804 | 320 (39%) | 9 (2%) |
| de | 804 | 355 (44%) | 243 (68%) |
| es | 804 | 312 (38%) | 37 (11%) |
| fa | 804 | 9 (1%) | 1 (11%) |
| fr | 804 | 804 (100%) | 803 (99%) |
| id | 804 | 82 (10%) | 20 (24%) |
| it | 804 | 77 (9%) | 7 (9%) |
| ja | 804 | 774 (96%) | 163 (21%) |
| ko | 804 | 264 (32%) | 102 (38%) |
| nl | 804 | 34 (4%) | 2 (5%) |
| pl | 804 | 261 (32%) | 4 (1%) |
| pt-BR | 804 | 256 (31%) | 47 (18%) |
| pt-PT | 804 | 30 (3%) | 3 (10%) |
| ro | 804 | 14 (1%) | 0 (0%) |
| ru | 804 | 490 (60%) | 61 (12%) |
| zh-CN | 804 | 527 (65%) | 131 (24%) |
| zh-TW | 804 | 86 (10%) | 45 (52%) |
Structure of the MDN JavaScript docs
| # | Chapter | Pages | Priority | Notes |
|---|---|---|---|---|
| 0 | Value & function properties in the global scope | 16 | 1 | Complete. |
| 1 | Object | 40 | 1 |
Complete. |
| 2 | Function | 14 | 1 | Complete. |
| 3 | Array | 38 | 1 | Complete. |
| 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 |
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 |
3 | In Nightly. Spec in flux. | |
| 17 | WeakSet | 6 | 2 | Complete. |
| 18 | Proxy | 17 | 3 | Complete. |
| 19 | Reflect | 15 | 3 | Complete. |
| 20 | Generator (legacy and ES6) Iterator StopIteration GeneratorFunction |
8 | 2 | Complete. |
| 21 | ArrayBuffer (6)DataView (21)TypedArray (34 [+ 3])Float32ArrayFloat64ArrayInt16ArrayInt32ArrayInt8ArrayUint16ArrayUint32ArrayUint8ArrayUint8ClampedArray |
73 | 2 | Missing pages:
|
| 22 | Promise | 8 | 1 | Complete. |
| 23 | Symbol | 9 | 2 |
Missing pages:
|
| 24 | ParallelArray | 1 | 5 | Complete. |
| 25 | Atomics SharedArrayBuffer |
17 | 4 | Preffed off. Spec in flux. |
| 26 | Expressions & Operators | 29 | 1 | Complete. |
| 27 | Statements & Declarations | 27 | 1 | Complete. |
| 28 | Functions | 11 | 1 |
Complete. |
| 29 | Classes | 4 | 1 | Complete. |
| 30 | JavaScript Guide | 15 | 1 |
|
| 31 | New in JavaScript | 15 | 4 |
Complete. |
| 32 | JavaScript error reference | 36 | 3 | Explains error messages (v8, Chakra). So that people searching for errors will find guidance. |
| 33 | Articles/Tutorials/Misc | 17 |
3 |
|
| 34 | Meta pages | 9 | 4 |
Other tasks to do
- 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.
Tagging standard
- Pages in the JavaScript/ page tree should at least have the tag "JavaScript".
- For methods belonging to an object, the name of the Object should be added (e.g.
String.fromCharCodeshould have "String"). - Methods should have "Method" and properties need a "Property" tag. All prototype members have the "prototype" tag.
- Features added in a new ECMAScript version have the tags "ECMAScript6" and "ECMAScript 2015" or later versions/years.
- The Experimental tag should only be used with new features where the standard in not yet finalized (e.g. in a strawman proposal) and the feature is in a Nightly version or behind a preference.
- Features are Deprecated if their usage is discouraged and are Obsolete if they have been removed from engines.
- If pages need any type of work, a "Needs*" 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 2017 Draft (ECMA-262) | Draft |
| ECMAScript Internationalization API 1.0 (ECMA-402) | Standard |
| ECMAScript Internationalization API 2.0 (ECMA-402) | Standard |
| ECMAScript Internationalization API 4.0 (ECMA-402) | Draft |
| SIMD | Draft |
| ECMAScript Shared Memory and Atomics | Draft |
| Proposals (with advanced stage and at least 1 implementation) | Draft |
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: