This is my TODO-list of pages i want to change, improve. Feel free to add items (especially in JavaScript and DOM)


  • Document this (The examples now work in the latest versions of Chrome and Firefox. Though you still cannot pass a string object for example --BYK)
  • Array: make it awesome. Maybe separate the Array built-in and the array instances. Maybe follow ES5.1 sectionning style because it makes sense. Write a note for PHP devs.
  • Object.defineProperty: talk about configurable more in details and program robusteness, invariants, etc.
  • `constructor` and `prototype` enumeration inconsistencies¬†
  • Write something to explain that there are no method in JS, just [[Get]]+[[Call]]


  • Write a page to describe basic JavaScript data structure. See Map and Set bug for related discussion


  • window.onunload. Explain the unload semantics
  • Maybe ask to stop on-* pages and ask to rather have dom event pages. One not somewhere could explain how to attach event handlers.
  • document.querySelectorAll: cleanup. say NodeLists aren't live, because it'd be impossible to implement or terrible performance-wise.
  • NodeList & HTMLCollection. Add a section on why they look like arrays but are not (and can't use array extras on it). Talk more about liveness maybe.
  • document.cookie: talk about cookie theft, cleanup. Maybe try to discuss ow to prevent it with some ES5 magics (needs an instance of IE9-10).
  • Not sure what to do with this page
  • element.addEventListener: improve
  • event.relatedTarget drag and drop events are standard since HTML5. Investigate relatedTarget semantics for the different drag events.
  • Improve Creating_and_triggering_custom_events. Talk about CustomEvent (add browser support for this feature as well(FF version: 6)). Discuss usefulness of CustomEvents
  • make sure there is a page explaining event propagation models (create one if not). Add linnks to that page from stop{immediate}propagation
  • Encourage people to stop using and writeln
  • Get DOMContentLoaded out of and maybe rearrange this page
  • Improve
  • Document event propagation properly (IE8 model as well) instead of just
  • Improve
  • Improve and document HTML5 resource fetching.
  • Document!/LeaVerou/stat...21232360742912
  • Write
  • Not Mozilla-specific. HTML5.
    • compat table
    • Try to shim defer/async if any useful
  • Write about Window and WindowProxy
  • Write about (the current MDN page is too long and too complicated)
  • Write about (based on HTML5)
  • document Transferable objects
  • alert/prompt, etc.
  • Investigate the relationship between a@download and HTTP header Content-Disposition. Whatwg stuff
  • For video/audio/media, document progressevents, etc.
  • Document behavior of bug 483304 (cross-browser inconsistency)

Other JS technologies

  • frames. apparently window !== frames on IE8 or something. Investigate & document
  • setTimeout: add a note on the fact that integers are returned as identifers which could be a security issue in cases. show how to have a safe setTimeout/clearTimeout pair. Add a full section on "fast setTimeout 0"
  • Make something out of this advice


  • display: document table-related values.
  • Bring to MDN some sort of "definite CSS positionning guide", because this is fucking difficult!
  • z-index



Document Tags and Contributors

 Contributors to this page: dbruant, g_marty, Marcoos, BYK, Manuel_Strehl, Golmote
 Last updated by: dbruant,