Quoted from MDN:
Every symbol value returned from
Symbol()is unique. A symbol value may be used as an identifier for object properties; this is the data type’s only purpose. Some further explanation about purpose and usage can be found in the glossary entry for Symbol.
As I am a skeptic in all things, I have to wonder what “unique” means, and how it is accomplished. Does anyone know? I would assume that new symbols are checked against some kind of global
Set, but what are they? Random letters and numbers? Something lower level?