Tip 25: Combine Methods with Chaining
Explore how to combine JavaScript array methods with chaining to write concise and readable code. Understand the process of filtering, mapping, and iterating over arrays without intermediate variables. Discover best practices, performance considerations, and how method order impacts your code behavior.
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Chaining
Chaining is an old concept in programming. You can find it in many object-oriented languages. Like a lot of programming concepts, it actually sounds more complicated than it is in practice.
Here’s a quick definition: Chaining is immediately calling a method on a returned object (which in some cases is the original object) without reassigning the value first.
Okay, now forget that definition. For our purposes, chaining means that you can call several array methods in a row (as long as you get an array back). It’s a convenient way to perform several actions in a very clear manner.
Example
Think back to the last example: sending notifications to club members. The example was simplified (as examples always are). An actual array of club members would have a lot more data. It would have member status, email addresses, mailing addresses, position, and so on.
To keep ...