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	awight
	Oct 21 2019, 3:09 PM

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	Not empty banner. <button class="foobutt">Foo</button>

	<script lang="javascript">
	/**
	* Minimal banner code to report banner history information and associate with a click.
	* Requires that the containing campaign have "Banner history logging" enabled.
	*
	* If sampling the banner history logs, use parameter `?bannerHistoryLogRate=1` for debugging.
	*/

	$( function () {
	$( '.foobutt' ).click( function () {
	var bannerHistoryLoggingId,
	mixins = mw.centralNotice.getDataProperty( 'mixins' ),
	trackers = [];

	if ( mixins && mixins.bannerHistoryLogger ) {
	// Note that the logging ID is not uniquely-identifying for a given user, it is `mw.user.generateRandomSessionId()` and will change between requests.
	bannerHistoryLoggingId = mw.centralNotice.bannerHistoryLogger.id;
	trackers.push(
	// FIXME: this is really annoying, it can be omitted if you're okay with dropping browsers without beaconSend.
	mw.centralNotice.bannerHistoryLogger.ensureLogSent()
	);
	}

	Promise.all(trackers).then( function () {
	mw.track( 'event.WMDEBannerEvents', {
	bannerAction: 'mobile-mini-banner-expanded',
	// FIXME: logging ID would be passed in its own field, this was a workaround for EventLogging validation.
	bannerName: 'TestBanner, logging ID ' + bannerHistoryLoggingId,
	eventRate: 123
	} );
	} );
	} );
	} );
	</script>