randString.js #1

var isNumber = require('../lang/isNumber');
var isString = require('../lang/isString');
var randInt = require('./randInt');

    var defaultDictionary = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

    function randomString(length, dictionary) {
        if(!isNumber(length) || length <= 0) {
          length = 8;
        }

        if(!isString(dictionary) || dictionary.length < 1) {
          dictionary = defaultDictionary;
        }

        var result = '',
            domain = dictionary.length - 1;

        while(length--) {
          result += dictionary[randInt(0, domain)];
        }
        
        return result;
    }

    module.exports = randomString;