Arrays
Arrays
Section titled “Arrays”Introduction
Section titled “Introduction”Arrays are ordered collections of values. JavaScript arrays are dynamic, zero-indexed, and can hold mixed types. They come with a powerful set of built-in methods for data manipulation.
Learning Objectives
Section titled “Learning Objectives”- Create and manipulate arrays
- Master array iteration methods (map, filter, reduce)
- Understand performance implications of array operations
Topics Covered
Section titled “Topics Covered”| Topic | Description |
|---|---|
| Creating Arrays | Literals, constructors, Array.from(), Array.of() |
| Array Methods | push, pop, shift, unshift, slice, splice |
| map | Transform each element |
| filter | Select elements by condition |
| reduce | Accumulate values |
| forEach | Iterate over elements |
| find/findIndex | Search for elements |
| some/every | Test conditions |
| flat/flatMap | Flatten nested arrays |
| sort | Sort elements |
| Performance | Time complexity and best practices |
Estimated Learning Time
Section titled “Estimated Learning Time”2–3 hours
Related Topics
Section titled “Related Topics”- Objects
- Functions
- Iterators & Generators (Phase 2)