Well-known Symbols
name clashes occurring in objects and how to avoid them using Symbols
When using symbols as identifiers for objects, we don’t have to set up a global registry of available identifiers. We also save the creation of a new identifier, as all we need to do is create a Symbol()
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The same holds for external libraries.
In the next lesson, we’ll talk about some well-known symbols and how they change the behavior of your code.
Well-known Symbols
There are some well-known symbols defined to access and modify internal JavaScript behavior. For example, you can redefine built-in methods, operators, and loops. Redefining standard language behavior usually confuses other developers. Ask yourself, will this skill move you forward in your career?
We will not focus on well-known symbols in this section. If there is a valid use case for it, I will signal it in the corresponding lesson. Otherwise, I suggest staying away from manipulating the expected behavior of your code.
Before learning newer concepts, let’s solve some exercises.
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