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Chapter 7: Modern Arrays and Immutable Methods

Learn modern array manipulation using functional methods and the latest immutable array features.

JavaScriptArrays

Modern Arrays and Immutable Methods

Arrays are the most used data structure in JS. We’ll learn how to work with them without mutating state, a key concept for modern frameworks.

Key Topics

  • Functional Methods: map(), filter(), reduce()
  • Modern Immutable methods: toSorted(), toReversed(), toSpliced()
  • Array Destructuring and Spread
  • Finding elements with find() and findIndex()