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Fire VisibilityChange event on document unloading

Category

Performance

Type

New or changed feature

Status

Enabled by default (Chrome 56)

Intent stage

None

Summary

visibilitychange event should fire as part of unload process and document.visibilityState should report 'hidden'.

Standards & signals

• Specification: http://w3c.github.io/page-visibility/
• Firefox: Shipped/Shipping
• Safari: No signal
• Web developers: No signals
• Tracking bug: https://bugs.chromium.org/p/chromium/issues/detail?id=594049

View on chromestatus.com