base64-js

What is base64-js?

The base64-js npm package is a utility for encoding and decoding data to and from base64, a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is commonly used to encode data in web applications.

What are base64-js's main functionalities?

Encoding a byte array to a base64 string

This feature allows you to convert a byte array (Uint8Array) into a base64 encoded string.

"use strict";\nconst base64js = require('base64-js');\nconst bytes = new Uint8Array([72, 101, 108, 108, 111]);\nconst base64String = base64js.fromByteArray(bytes);\nconsole.log(base64String); // Outputs: 'SGVsbG8='

Decoding a base64 string to a byte array

This feature allows you to convert a base64 encoded string back into a byte array (Uint8Array).

"use strict";\nconst base64js = require('base64-js');\nconst base64String = 'SGVsbG8=';\nconst bytes = base64js.toByteArray(base64String);\nconsole.log(bytes); // Outputs: Uint8Array [72, 101, 108, 108, 111]

Other packages similar to base64-js

buffer

The 'buffer' package provides a way to handle binary data in Node.js. It includes methods for encoding and decoding base64. It is more comprehensive than base64-js as it is a part of Node.js core and handles more than just base64 encoding.

js-base64

The 'js-base64' package is another utility for encoding and decoding base64. It works both in the browser and in Node.js, and it also provides additional functionalities like Unicode string support, which base64-js does not have.

README

base64-js

base64-js does basic base64 encoding/decoding in pure JS.

Many browsers already have base64 encoding/decoding functionality, but it is for text data, not all-purpose binary data.

Sometimes encoding/decoding binary data in the browser is useful, and that is what this module does.

install

With npm do:

npm install base64-js and var base64js = require('base64-js')

For use in web browsers do:

<script src="base64js.min.js"></script>

Get supported base64-js with the Tidelift Subscription

methods

base64js has three exposed functions, byteLength, toByteArray and fromByteArray, which both take a single argument.

• byteLength - Takes a base64 string and returns length of byte array
• toByteArray - Takes a base64 string and returns a byte array
• fromByteArray - Takes a byte array and returns a base64 string

license

MIT