JavaScript Design Patterns: The Observer Pattern

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In JavaScript, there is a problem that comes up often. You need a way to update parts of a page in response to certain events, with the data these provide. Say, for example, user input that you then project into one or many components. This leads into a lot of push-and-pull in the code to keep everything in sync. This is where the observer design pattern can help — it enables one-to-many data binding between elements. This one-way data binding can be event driven. With this pattern, you can build reusable code that solves for your specific needs. In this…
JavaScript Design Patterns: The Observer Pattern