Maniphest T90327

Remove use of synchronous XMLHttpRequest (deprecated)
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	Krinkle
	Feb 21 2015, 5:56 AM

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Description

It's been discouraged since its inception, but has now officially been deprecated as of Chrome 40 and Firefox 30.

Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check http://xhr.spec.whatwg.org/.

http://updates.html5rocks.com/2012/01/Getting-Rid-of-Synchronous-XHRs

For the web's integrity, it's unlikely the features will be removed. Though new features are requirement to not allow use of these (e.g. XHR2 features only work asynchronous). While the deprecation reasons (performance( are reason enough, having these in our code base is an additional blocker for improvements of the lower level interfaces.

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		Status	Subtype	Assigned	Task
		Open		None	T90327 Remove use of synchronous XMLHttpRequest (deprecated)
		Resolved		matthiasmullie	T73474 R5. Flow uses synchronous XMLHttpRequests (VE+Flow)
		Duplicate		None	T90328 PageTriage uses synchronous XMLHttpRequests
		Resolved		Ladsgroup	T90329 FlaggedRevs uses synchronous XMLHttpRequests
		Resolved		• Mattflaschen-WMF	T46925 GuidedTour: Remove use of sync XHR - use mw.Api and async for parsing
		Resolved		matmarex	T68898 PageCuration: Get rid of synchronous AJAX request on page load
		Resolved		• Gilles	T69205 Upload Wizard must not use async=false for checking the validity of a custom license tag

Event Timeline

Krinkle created this task.Feb 21 2015, 5:56 AM

Krinkle raised the priority of this task from to Needs Triage.

Krinkle updated the task description. (Show Details)

Krinkle added projects: Tracking-Neverending, JavaScript.

Krinkle subscribed.

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptFeb 21 2015, 5:56 AM

Krinkle added a subtask: T73474: R5. Flow uses synchronous XMLHttpRequests (VE+Flow).Feb 21 2015, 5:56 AM

Krenair subscribed.Feb 21 2015, 6:10 AM

Aklapper triaged this task as Medium priority.Feb 21 2015, 11:24 AM

Aklapper added a project: Performance Issue.

Aklapper set Security to None.

• Mattflaschen-WMF edited subtasks, added: T46925: GuidedTour: Remove use of sync XHR - use mw.Api and async for parsing; removed: T90330: GuidedTour uses synchronous XMLHttpRequest.Feb 23 2015, 7:19 PM

• DannyH closed subtask T73474: R5. Flow uses synchronous XMLHttpRequests (VE+Flow) as Resolved.Mar 23 2015, 11:05 PM

Krinkle moved this task from Tag to Next-up on the Performance Issue board.May 18 2015, 5:52 PM

Krinkle edited projects, added Performance-Team, WMF-General-or-Unknown; removed Performance Issue, JavaScript.Jun 18 2015, 12:08 AM

Krinkle moved this task from Inbox, needs triage to Backlog: Maintenance, non-prioritized on the Performance-Team board.Jun 18 2015, 12:13 AM

Ricordisamoa awarded a token.Mar 10 2016, 3:24 AM

Ricordisamoa subscribed.

Ricordisamoa added subtasks: T68898: PageCuration: Get rid of synchronous AJAX request on page load, T69205: Upload Wizard must not use async=false for checking the validity of a custom license tag.Mar 19 2016, 7:19 AM

There's a bunch of these under SemanticForms and SemanticResultFormats

Danny_B moved this task from Tag to Should be Goal instead on the Tracking-Neverending board.Jul 11 2016, 7:20 PM

Danny_B added a project: JavaScript.

phuedx closed subtask T46925: GuidedTour: Remove use of sync XHR - use mw.Api and async for parsing as Resolved.Aug 10 2016, 12:08 PM

Krinkle moved this task from Backlog: Maintenance, non-prioritized to Radar on the Performance-Team board.Aug 10 2016, 8:01 PM

• Phabricator_maintenance added a project: Goal.Aug 13 2016, 8:41 PM

• Phabricator_maintenance removed a project: Tracking-Neverending.Aug 13 2016, 9:57 PM

Krinkle edited projects, added Technical-Debt; removed Performance-Team.Nov 17 2016, 1:18 AM

Etonkovidova closed subtask T68898: PageCuration: Get rid of synchronous AJAX request on page load as Resolved.Aug 17 2018, 9:28 PM

matmarex closed subtask T90329: FlaggedRevs uses synchronous XMLHttpRequests as Resolved.Apr 9 2024, 3:57 PM