The base62 npm package provides utilities for encoding and decoding data using the Base62 encoding scheme. Base62 encoding is commonly used for shortening URLs, creating compact representations of data, and other applications where a compact, alphanumeric representation is beneficial.
Encoding
This feature allows you to encode a number into a Base62 string. The example encodes the number 12345 into the Base62 string 'dnh'.
const base62 = require('base62/lib/ascii');
const encoded = base62.encode(12345);
console.log(encoded); // Output: 'dnh'Decoding
This feature allows you to decode a Base62 string back into a number. The example decodes the Base62 string 'dnh' back into the number 12345.
const base62 = require('base62/lib/ascii');
const decoded = base62.decode('dnh');
console.log(decoded); // Output: 12345The base-x package is a versatile encoding library that supports custom base encoding schemes, including Base62. It is more flexible than base62 as it allows you to define your own character set for encoding and decoding.
The base64url package provides Base64 URL-safe encoding and decoding. While it focuses on Base64 rather than Base62, it is useful for similar applications where URL-safe encoding is required.
The btoa package provides Base64 encoding and decoding for Node.js. It is a simple and lightweight alternative for Base64 encoding, but does not support Base62.
A javascript Base62 encode/decoder for node.js
npm install base62
Base62 = require('base62')
Base62.encode(999) // 'g7'
Base62.decode('g7') // 999
The default character set is 0-9a-zA-Z. This can be updated to a custom character set. Naturally, it must be 62 characters long.
Instead of the character set 0-9a-zA-Z you want to use 0-9A-Za-z, call the setCharacterSet() method on the Base62 object passing in the string "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz". Note that all characters must be unique.
Base62 = require('base62')
Base62.setCharacterSet("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
Base62.encode(999) // 'G7'
Base62.decode('G7') // 999
Source hosted at GitHub. Report Issues/Feature requests on GitHub Issues.
Copyright (c) 2016 Andrew Nesbitt. See LICENSE for details.
FAQs
JavaScript Base62 encode/decoder
We found that base62 demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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