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JavaScript arrays, array methods, and push/pop/shift/unshift operations

Arrays are ordered list-like objects with mutation helpers like `push`, `pop`, `shift`, and `unshift`.

JavaScript Easy Theory

JavaScript arrays, array methods, and push/pop/shift/unshift operations

Arrays are ordered list-like objects with mutation helpers like `push`, `pop`, `shift`, and `unshift`.

  • Array methods mix mutation and non-mutation
  • Front operations are typically costlier than tail operations
  • Arrays are objects under the hood
#arrays #basics #javascript

JavaScript arrays, array methods, and push/pop/shift/unshift operations