JavaScript Tutorial

The language for programming web pages.

Chapter Quiz Exercises
Course Topics
JS Introduction JS Where To JS Output JS Variables JS Data Types JS Functions JS Objects JS Arrays JS Strings JS If Conditions JS Loops JS Math JS Errors JS Scope JS DOM JS Events JS Promises & Async JS Classes JS JSON JS RegExp

JS Arrays

JavaScript Arrays

An array is a special variable that can hold more than one value. Arrays use numbered indexes starting from 0. Arrays are objects in JavaScript.

Common Array Methods:

  • push() — Add to end
  • pop() — Remove from end
  • shift() — Remove from start
  • unshift() — Add to start
  • map() — Transform each element
  • filter() — Filter elements
  • reduce() — Reduce to single value
  • find() — Find first match
  • includes() — Check if exists
  • sort() — Sort array

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Topics
JS Introduction JS Where To JS Output JS Variables JS Data Types JS Functions JS Objects JS Arrays JS Strings JS If Conditions JS Loops JS Math JS Errors JS Scope JS DOM JS Events JS Promises & Async JS Classes JS JSON JS RegExp