User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36 Steps to reproduce: Expanded the example uploaded for bug report 1377581 to report the isIntersecting property on the only entry provided to the callback. Actual results: Property came back as undefined. Same code gave me true/false (i.e. the expected boolean) in current Chrome. Expected results: Chrome devs do not meet MDN specification with regards to crossing the threshold outwards (false) or inwards (true). Any ratio > 0 is true for them. Would be nice if FireFox could get this right.
Component: Untriaged → Layout
Product: Firefox → Core
I tested the described test case in latest FF Nightly and was not able to reproduce. Jochen, can you provide the version of Firefox in which you tested this in?
Flags: needinfo?(tschneider) → needinfo?(jochen)
Ok, I could see in other bug reports that you are testing this in FF 54. And, yes, I was able to reproduce the reported issue. Support for the isIntersecting property landed via Bug 1319137 and will be available in FF 55.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 11 months ago
Resolution: --- → DUPLICATE
Duplicate of bug: 1319137
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