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Douglas Watts
5,464 PointsonChange/addEventListenres
Can someone please help me with this challenge:
http://teamtreehouse.com/library/adding-multiple-event-listeners
3 Answers
Aaron Graham
18,033 PointsThe problem with using onchange, is that if you try to register multiple function with the event, you end up overwriting the previous references, and end with only the last function linked to the event. This challenge wants you to use addEventListener instead. This way, you can register multiple functions with the 'change' event. Try this:
navigationSelect.addEventListener('change', navigateToValue);
navigationSelect.addEventListener('change', sendAnalytics);
Douglas Watts
5,464 PointsAh, now it makes sense. Sometimes i get more out of the forums than i do out of the lessons!
Aaron Graham
18,033 PointsI know how you feel. The advantage the forums have is that you can ask a direct question about exactly what isn't making sense. The videos have to be very broad in what they cover. Glad I could help!
John Grillo
30,241 PointsSo why does navigationSelect.addEventListener('change', navigateToValue) = navigateToValue; navigationSelect.addEventListener('change', sendAnalytics) = sendAnalytics;
need the additional argument in the challenge? And thanks for the forum...Chalkley is a bit hard to follow at times.