2. Arrays

To specify the type of an array like [1, 2, 3], you can use the syntax number[]; this syntax works for any type (e.g. string[] is an array of strings, and so on). You may also see this written as Array<number>, which means the same thing. We'll learn more about the syntax T<U> when we cover generics.

Note that [number] is a different thing; refer to the section on Tuples.

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The TypeScript Handbook: Everyday Types

Exercises

• Ex. 2.1: String Arrays
• Ex. 2.2: Number & Boolean Arrays