In addition to your own symbols, ES6 comes up with a built-in set of symbols, known as well-known symbols. Here is a list of properties, referencing some important built-in symbols:
- Symbol.iterator
- Symbol.match
- Symbol.search
- Symbol.replace
- Symbol.split
- Symbol.hasInstanceSymbol.species
- Symbol.unscopables
- Symbol.isContcatSpreadable
- Symbol.toPrimitive
You will come across the use of these symbols in various chapters of this book.
When referring to the well-known symbols in the text, we usually prefix them using the @@ notation. For example, the Symbol.iterator symbol is referred to as the @@iterator method. This is done to make it easier to refer to these symbols in the text.
