Show HN: Js-shortid – Generate short id clearly the simplest

I usually use hashids for this purpose, which has libraries for a lot of languages: http://hashids.org/

It's quick, easily reversible (so you can translate "XmVgp" to "34" without consulting the database), and lets you choose the character set and minimum # of characters.

How about this https://github.com/dylang/shortid/

What's wrong with this?

Math.random().toString(36).substr(2, 8)