Change Details

Before building out T197718 we want to determine how to instrument and test this feature. @ovasileva @Tbayer @alexhollender @phuedx @Jdlrobson met to discuss options. We'll update this card with a summary of that conversation and associated spikes we'll need to carry out to do so. = Notes [] scroll event is triggered by user interactions, internal links (e.g. #Heading) and opening overlays (notably clicking images opens the media viewer overlay which triggers a scroll to top). @phuedx pointed out that looking at ev.currentTarget will allow us to distinguish user triggered scrolls and code related scrolls [] We need to decide whether to send multiple events per page or follow an approach similar to https://meta.wikimedia.org/wiki/Schema:MobileWikiAppPageScroll [] We'll need to determine whether an A/B test is needed before building out T197718. In particular that decision will steer how engineers implement this.

Before building out T197718 we want to determine how to instrument and test this feature. @ovasileva @Tbayer @alexhollender @phuedx @Jdlrobson met to discuss options. We'll update this card with a summary of that conversation and associated spikes we'll need to carry out to do so. = Notes [] scroll event is triggered by user interactions, internal links (e.g. #Heading) and opening overlays (notably clicking images opens the media viewer overlay which triggers a scroll to top). @phuedx pointed out that looking at `event.currentTarget.srcElement` will allow us to distinguish scrollbar-triggered (`srcElement === document`) and UI element triggered scrolls. [] We need to decide whether to send multiple events per page or follow an approach similar to https://meta.wikimedia.org/wiki/Schema:MobileWikiAppPageScroll [] We'll need to determine whether an A/B test is needed before building out T197718. In particular that decision will steer how engineers implement this.

Before building out T197718 we want to determine how to instrument and test this feature. @ovasileva @Tbayer @alexhollender @phuedx @Jdlrobson met to discuss options. We'll update this card with a summary of that conversation and associated spikes we'll need to carry out to do so. = Notes [] scroll event is triggered by user interactions, internal links (e.g. #Heading) and opening overlays (notably clicking images opens the media viewer overlay which triggers a scroll to top). @phuedx pointed out that looking at ev`event.currentTargetet.srcElement` will allow us to distinguish user scrollbar-triggered scrolls(`srcElement === document`) and code relatUI element triggered scrolls. [] We need to decide whether to send multiple events per page or follow an approach similar to https://meta.wikimedia.org/wiki/Schema:MobileWikiAppPageScroll [] We'll need to determine whether an A/B test is needed before building out T197718. In particular that decision will steer how engineers implement this.