randstr

A simple function can be used to generate a random string with the specified length. And, the range of the characters is configurable.

Note: Math.random() is used to generate random numbers in this module. But, it does not provide cryptographically secure random numbers. Do not use them for anything related to security. You can use the crypto.randomBytes() in Node.js or window.crypto.getRandomValues() in browser.

Installation

To install randstr, use npm

$ npm install randstr

For browsers, use bower

$ bower install randstr

Usage

For node.js:

var randstr = require('randstr');

// By default, randstr will use `A-Za-z0-9` characters to generate
// a random string, and the length of the string is 32.
randstr();
// >> "xtYRPnR8rM0M6izYTNv8gJd07thPIyN9"


// You can set the default length and range of the characters.
randstr.len = 16;
randstr.chars = 'abcdefghijkmn';

randstr();
// >> "cfhaffchimiblalg"


// However, you can still specify the length and the range of the characters
// to override the default settings when the randstr is called.
randstr(6);
// >> "e3pTse"

randstr(6, '0123456789');
// >> "823748"

For browsers:

<script src="bower_components/randstr/randstr.js"></script>
<script>
randstr();
// >> "xtYRPnR8rM0M6izYTNv8gJd07thPIyN9"
</script>

LICENSE

Under the MIT license.