'formdata' event

Category: Web Components
Type: New or changed feature
Status: Enabled by default (Chrome 77)
Intent stage: Prepare to ship

Breaking change: No
Enterprise impact: None
Spec maturity: Published standard
Web Platform Tests: Yes

WPT details: https://wpt.fyi/results/html/semantics/forms/form-submission-0 https://wpt.fyi/results/xhr/formdata.htm

Summary

The 'formdata' event enables any objects to provide form data. It helps avoid creating <input type=hidden> representing application state, or making submittable custom elements.

Standards & signals

Specification: https://html.spec.whatwg.org/multipage/indices.html#event-formdata
Firefox: Positive
Safari: Positive
Web developers: Positive
Tracking bug: https://bugs.chromium.org/p/chromium/issues/detail?id=825684

Ecosystem

Web Platform Tests: https://wpt.fyi/results/?q=html%2Fsemantics%2Fforms%2Fform-submission-0
Chrome Platform Showcase: https://chrome-platform-showcase.paulkinlan-ea.deno.net/features
GenDN reference: https://gendn.paulkinlan-ea.deno.net/features
chrome.dev demos search: https://www.google.com/search?q=site%3Achrome.dev+'formdata'%20event
MDN Web Docs: https://developer.mozilla.org/en-US/search?q='formdata'%20event
Baseline status: https://webstatus.dev/?q='formdata'%20event

Docs: https://docs.google.com/document/d/1JO8puctCSpW-ZYGU8lF-h4FWRIDQNDVexzHoOQ2iQmY/edit?usp=sharing

Explainers: https://docs.google.com/document/d/1JO8puctCSpW-ZYGU8lF-h4FWRIDQNDVexzHoOQ2iQmY/edit?usp=sharing

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