Generate random string/characters in JavaScript

Question

I want a 5 character string composed of characters picked randomly from the set [a-zA-Z0-9].

What\'s the best way to do this with JavaScript?

Answer 1

To meet requirement [a-zA-Z0-9] and length=5 use

btoa(Math.random()).substr(10, 5);

Lowercase letters, uppercase letters, and numbers will occur.