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The nanoid npm package is a small, secure, URL-friendly, unique string ID generator for JavaScript applications. It is designed to be fast and efficient, producing random or custom ID strings suitable for a variety of applications, including database keys, session identifiers, and more.
Simple ID Generation
Generate a unique, URL-friendly ID. The default ID length is 21 characters, which provides a good balance of speed and uniqueness.
const { nanoid } = require('nanoid');
console.log(nanoid()); // Example output: 'V1StGXR8_Z5jdHi6B-myT'
Custom Length ID Generation
Generate a unique ID with a custom length. This allows for shorter or longer IDs depending on the level of uniqueness required.
const { nanoid } = require('nanoid');
console.log(nanoid(10)); // Example output: 'IRFa-VaY2b'
Non-secure ID Generation
Generate a non-secure ID with a custom alphabet and length. This is useful for cases where unique IDs are needed without the cryptographic strength.
const { customAlphabet } = require('nanoid');
const nanoid = customAlphabet('1234567890abcdef', 10);
console.log(nanoid()); // Example output: '4f90d13a42'
Custom Alphabet ID Generation
Generate a unique ID using a custom alphabet. This is useful when you need to avoid certain characters or use a specific set of characters for IDs.
const { customAlphabet } = require('nanoid');
const alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
const nanoid = customAlphabet(alphabet, 10);
console.log(nanoid()); // Example output: '4f90d13a42'
The uuid package can generate RFC-compliant UUIDs. It offers different versions of UUIDs, such as v1 (timestamp-based), v4 (random), and others. Compared to nanoid, uuid provides more standardized and structured IDs, but they are not as compact as nanoid's IDs.
Shortid is another package for generating short non-sequential url-friendly unique ids. However, it is no longer recommended for use as it has been deprecated in favor of nanoid, which is more secure and maintains a smaller size.
Uniqid is a package that generates unique IDs based on the current time and an optional prefix or suffix. It is less feature-rich compared to nanoid and does not provide the same level of customization or security.
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A tiny, secure, URL-friendly, unique string ID generator for JavaScript.
“An amazing level of senseless perfectionism, which is simply impossible not to respect.”
A-Za-z0-9_-
).
So ID size was reduced from 36 to 21 symbols.import { nanoid } from 'nanoid'
model.id = nanoid() //=> "V1StGXR8_Z5jdHi6B-myT"
Supports modern browsers, IE with Babel, Node.js and React Native.
Read full docs here.
FAQs
A tiny (116 bytes), secure URL-friendly unique string ID generator
We found that nanoid demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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