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Event Delegation with RxJS


Event delegation is an extremely powerful technique. It allows you to use a single event handler to listen to events on any number of child elements. It also has the added benefit of working with dynamically added elements without even a single line of additional code. Libraries such as jQuery offer this feature right out of the box, but with RxJS and the fromEvent helper, we’ll need to utilise the selector function to achieve the same result. NOTE: The element.closest method shown in this video required a polyfill for older version of IE which can be found here https://github.com/jonathantneal/closest