Generate a string of random characters

I want a string of fixed length, composed of characters picked randomly from a set of characters e.g. [a-zA-Z0-9].

How can I do this with JavaScript?

I think this will work for you:

`function makeid(length) {
var result = '';
var characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
var charactersLength = characters.length;
for ( var i = 0; i

Stack Overflow Q#1349404, score: 3768