Hi, *Summary*:
We had landed this feature behind a preference last month, and we are planning to ship this on Firefox 69. The ResizeObserver API is an interface for observing changes to the element’s size (based on its content-box or border-box, for now). Each time when the element's size changes, the callback function would be triggered, and you can get the current content-box size or border-box size information (or other boxes in the future). *Bug*: https://bugzilla.mozilla.org/show_bug.cgi?id=1543839 *Link to standard*: https://drafts.csswg.org/resize-observer-1/ *Platform coverage*: On all platforms. *Estimated or target release*: Firefox 69 *Preference:* layout.css.resizeobserver.enabled *Do other browser engines implement this?* - * Google Chrome: Supported since Chrome 64 <https://caniuse.com/#search=resize%20observer> * - * Safari: Will be available in Safari 13, <https://bugs.webkit.org/show_bug.cgi?id=157743>(Webkit Bug 157743 has been fixed) * *web-platform-tests*: https://searchfox.org/mozilla-central/source/testing/web-platform/tests/resize-observer (or https://github.com/web-platform-tests/wpt/tree/master/resize-observer) *Is this feature restricted to secure contexts?* No If you have any concerns or questions, please feel free to let me know. Thanks. Regards, Boris Chiou _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform