If you’re following frontend experts on social media, you hear a lot about how great (reactive) functional programming (FP or RFP for short) is for frontend development. Or even that object-oriented programming (OOP) is bad and that we should no longer use it.
Then you go to your day job, you’re doing OOP and you feel like you’re the only one on Earth still using it.
The most popular frameworks, React and Vue.js still have the "OO" approach as the default in their Getting started tutorial even though they have a full-blown functional API.
FP is great, but there is no reason to limit yourself to FP because "OOP is dead" or "only FP bro". Learning more about it might prove to be more useful for your career than learning about the latest library or framework that will be deprecated by the time you get a chance to use it.
Grasping foundations enables you to learn new technology more quickly, which is very relevant in frontend development.
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