Arrays in JavaScript

Short summary

JavaScript arrays are ordered collections that store mixed-type values with dynamic sizing. Create them using array literals (const arr = [1, 2, 3]) or the Array constructor, then access and modify elements by index. Common operations include push(), pop(), shift(), and unshift() for adding/removing elements, and indexOf() for searching.

• •Arrays are ordered, zero-indexed collections supporting mixed data types
• •Create with array literals [] or Array constructor; access via index notation
• •Basic operations: push/pop (end), shift/unshift (beginning), indexOf() for search

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