Chapter 7: Symbols and Their Uses
by Nilson Jacques
While ES2015 has introduced many language features that have been on developers’ wish lists for some time, there are some new features that are less well known and understood, and the benefits of which are much less clear — such as symbols.
The symbol is a new primitive type, a unique token that’s guaranteed never to clash with another symbol. In this sense, you could think of symbols as a kind of UUID (universally unique identifier). Let’s look at how symbols work, and what we can do with them.
Creating New Symbols
Creating new symbols is very straightforward and is simply a case of calling the Symbol function. Note that this is a just a standard function and not an object constructor. Trying ...
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