What are typed arrays?

Posted by Jennifer | Updated on September 8, 2020

Typed arrays are array-like objects from ECMAScript 6 API for handling binary data. JavaScript provides 8 Typed array types:

Int8Array: An array of 8-bit signed integers
Int16Array: An array of 16-bit signed integers
Int32Array: An array of 32-bit signed integers
Uint8Array: An array of 8-bit unsigned integers
Uint16Array: An array of 16-bit unsigned integers
Uint32Array: An array of 32-bit unsigned integers
Float32Array: An array of 32-bit floating point numbers
Float64Array: An array of 64-bit floating point numbers

For example, you can create an array of 8-bit signed integers as below

const a = new Int8Array();

// You can pre-allocate n bytes

const bytes = 1024

const a = new Int8Array(bytes)

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What are typed arrays?

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