March 2021
Beginner
404 pages
5h 47m
English
Content preview from Learn to Code With JavaScript
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Chapter 5: Collections
So far, we’ve met primitive data types such as strings, numbers and Booleans. But what if we want to store a whole collection of values in a single variable? For example, we might have a list of prices that we want store in the same place. Composite data types can be used to collect primitive values in a structured way.
Programming languages use a variety of different data structures to store values, but one of the most common is an array.
In this chapter, we’ll be covering the following:
- creating arrays
- adding values to arrays
- removing values from arrays
- the spread operator
- multi-dimensional arrays
Arrays
An array is an ordered list of values. For example, consider the following shopping list:
- Apple
- Banana
- Cupcake ...
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