Intent to Implement and Ship: Disallow document.open and document.write during unload

[Daniel Cheng]

Contact emails dch...@chromium.org Spec https://html.spec.whatwg.org/multipage/webappapis.html#opening-the-input-stream Summary document.open() and document.write() while a document is unloading will be ignored. Motivation This aligns our behavior to match Firefox, Safari, and the spec. It also allows potential future simplification of code: there have been a number of bugs in the past related to using document.open during unload.

Interoperability risk Firefox: Shipped Edge: No public signals Safari: Shipped Web developers: No signals Compatibility risk Low risk: already shipped in Firefox for several years now.

Ongoing technical constraints None.

Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)? Yes or no. Yes

OWP launch tracking bug https://crbug.com/583586 Link to entry on the Chrome Platform Status https://www.chromestatus.com/features/5702730488217600 Requesting approval to ship? Yes

[TAMURA, Kent]

LGTM1.  It's safe because of the status of Firefox and Safari.

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TAMURA Kent
Software Engineer, Google

[Jochen Eisinger]

lgtm2

[Philip Jägenstedt]

LGTM3

lgtm2

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[Chris Harrelson]

LGTM4

[Rick Byers]

LGTM5 if we really want to keep counting ;-)