How to Generate Unique ID in JavaScript

John on February 01, 2022

To generate unique ID's in JavaScript, use the uuid NPM package. This is a nice solution as the package has a tiny footprint and allows you to generate RFC4122 version 1, 3, 4, and 5 cryptographically-strong random UUIDs anywhere in your program.

Install the uuid NPM Package

In the root of your project (or where NPM is accessible) run the following command to install the uuid package:

npm i uuid

Add uuid to JS File and Use it

At the top of your JS file, require() the uuid package and store it in a constant. In my case, I am only using UUID version 4 so I only need to require uuid/v4:

const uuidv4 = require("uuid/v4")

Now you can generate unique ID's like this:

var id = uuidv4();

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