It doesn't matter where you see them, that's like saying that french and english are the same because they share some words. It's patterns that are particular t

It doesn't matter where you see them, that's like saying that french and english are the same because they share some words. It's patterns that are particular to a certain community of developers, but of course, can come up in other languages. This is an example of a node-ism, if (err) { return err } console.log("KEEP GOING") Notice how we break from an error right away. As a Node developer, you may not use the pattern, but you're definitely aware of it. Someone with just JS, and let's be honest, jQuery, is not used to returning quickly if there is an error. Decorating and animating a UI is far more forgiving. I's not about how long it takes to learn a certain module. It's about mitigating risk in building large web apps.