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TLDR: They're used because they are unique. That's it.
Imagine them like any other string except you can guarantee it's unique.
(Also when used as object keys they're enumerable which is nice)
Symbol.for() means Symbols are truly not unique.
Combined with the Symbol iterator Object.getOwnPropertySymbols object Symbols can be exposed
Symbol
Symbols
Ohh! now I get it. 😀
re: Symbols in ES6 - A Quick Guide VIEW POST
TOP OF THREAD FULL DISCUSSIONTLDR: They're used because they are unique. That's it.
Imagine them like any other string except you can guarantee it's unique.
(Also when used as object keys they're enumerable which is nice)
Symbol.for() means Symbols are truly not unique.
Combined with the
Symboliterator Object.getOwnPropertySymbols objectSymbolscan be exposedOhh! now I get it. 😀