base64-js
Advanced tools
Package description
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.
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]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.
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 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.
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>
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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 arraytoByteArray - Takes a base64 string and returns a byte arrayfromByteArray - Takes a byte array and returns a base64 stringMIT
FAQs
Base64 encoding/decoding in pure JS
The npm package base64-js receives a total of 32,830,014 weekly downloads. As such, base64-js popularity was classified as popular.
We found that base64-js demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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