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Console Queued Message Display
Stage Complete
Status In progress
Release target Firefox 12
Health OK
Status note Currently available in Nightly.


Product manager Kevin Dangoor
Directly Responsible Individual Dave Camp
Lead engineer Mihai Sucan
Security lead `
Privacy lead `
Localization lead `
Accessibility lead `
QA lead Vlad Maniac (irc: vladmaniac, #automation)
UX lead `
Product marketing lead `
Operations lead `
Additional members David Dahl

Open issues/risks


Stage 1: Definition

1. Feature overview

If a user's JavaScript logs messages using console.log and similar methods before the Web Console has been opened, those messages are lost. In order to see that log output, the user needs to reload the page.

With this feature in place, the user will see those messages as soon as they open the Web Console without needing to reload the page.

This feature also works for JavaScript errors and is very convenient for developers.

2. Users & use cases

With code like console.log("hi"); in a JS file, you should be able to load the page with the Web Console closed, open the Web Console and see "hi" in the log.

3. Dependencies


4. Requirements

  • messages logged using console.* methods should be displayed on open of Web Console (subject to limitations to avoid a queue that's too large)


  • Ideally, CSS and JavaScript errors would also be stored but if we can't get that on the first pass, that's acceptable.

Stage 2: Design

5. Functional specification


6. User experience design


Stage 3: Planning

7. Implementation plan


8. Reviews

Security review


Privacy review


Localization review




Quality Assurance review

in progress

Operations review


Stage 4: Development

9. Implementation


Stage 5: Release

10. Landing criteria


Feature details

Priority P1
Rank 6
Theme / Goal `
Roadmap Developer Tools
Secondary roadmap `
Feature list Desktop
Project `
Engineering team DevTools

Team status notes

  status notes
Products ` `
Engineering ` `
Security sec-review-needed dchan
Privacy ` `
Localization ` `
Accessibility ` `
Quality assurance ` Test Plan
User experience ` `
Product marketing ` `
Operations ` `