Generate A V4 UUID In The Browser
javascript
Written June 16, 2022
The Web Crypto
API provides
a
randomUUID
function for generating v4 UUID values which are cryptographically random.
It works like this:
> crypto.randomUUID()
'f2050c5e-af52-4ca2-b4d6-23758b3396c9'
> crypto.randomUUID()
'079d5186-84d4-41d6-a660-edafb6a74c86'
No two UUIDs will be the same. This is a great way to generate IDs that are guaranteed to be unique. Or if you need a value that is practically impossible to guess.
I was surprised to see that as of writing this, this function has great browser
support. Modern versions of all browsers except Internet Explorer have
implemented randomUUID.