Symbols
Symbols
Section titled “Symbols”Introduction
Section titled “Introduction”A Symbol is a unique, immutable primitive value used as object property keys. Every symbol is guaranteed to be unique, even if they have the same description.
Learning Objectives
Section titled “Learning Objectives”- Create symbols with
Symbol()andSymbol.for() - Use symbols as property keys
- Understand well-known symbols
- Know when to use symbols
Topics Covered
Section titled “Topics Covered”| Topic | Description | Est. Time |
|---|---|---|
| Creating Symbols | Symbol(), Symbol.for(), Symbol.keyFor() | 10 min |
| Well-Known Symbols | Symbol.iterator, Symbol.toPrimitive, etc. | 15 min |
Prerequisites
Section titled “Prerequisites”- Objects and property keys
- Basic understanding of iteration
- Property enumeration (Object.keys, for…in)
Learning Path
Section titled “Learning Path”Creating Symbols → Well-Known Symbols