JavaScript’s new IntersectionObserverThe new IntersectionObserver landed in Chromium about a week ago. I find it pretty awesome and wanted to do a quick run down on it. This new API eliminates a lot of the headaches where you would have to do things like poll the page to determine when a element is visible. For example, I have a tab that is not selected and it contains some widget that needs to size itself. I hacked around it like th
