What is `Symbol` in JavaScript and why is it useful?

JavaScript Associate Medium

JavaScript Associate — Medium

What is `Symbol` in JavaScript and why is it useful?

Key points

  • `Symbol` is a unique, immutable identifier in JavaScript.
  • It is used as object property keys to avoid naming collisions.
  • `Symbol` is a primitive type, not a mathematical symbol or special string.
  • It helps in creating more robust and maintainable code.

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