This is a recent change [1] to the spec for parsing the windowFeatures argument to window.open(). Previous to this change, window.open(url,'','popup=true') interpreted the 'popup=true' to mean popup is false. With this change, 'true' counts as a truthy value. [1] https://github.com/whatwg/html/pull/7425

Status in Chromium

Blink


No active development

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

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Owner

Last updated on 2022-03-03