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Nothing special - just a simple function that generates a random password in JavaScript.
I wrote this function, because I often used other password generators but pressed the 'generate' button as long as I had at least one digit and one special character in the generated result.
That annoyed me so i created a bookmarklet that generates 20 passwords that have a predefined number of different characters in it.
Some might say, that this is not so secure because the passwords are generated with a fixed pattern, but maybe you can use it and adjust it for your requirements (e.g. add some variance).
/**
* Generates a random password
*
* @param numLc Number of lowercase letters to be used (default 4)
* @param numUc Number of uppercase letters to be used (default 4)
* @param numDigits Number of digits to be used (default 4)
* @param numSpecial Number of special characters to be used (default 2)
* @returns {*|string|String}
*/
var generatePassword = function(numLc, numUc, numDigits, numSpecial) {
numLc = numLc || 4;
numUc = numUc || 4;
numDigits = numDigits || 4;
numSpecial = numSpecial || 2;
var lcLetters = 'abcdefghijklmnopqrstuvwxyz';
var ucLetters = lcLetters.toUpperCase();
var numbers = '0123456789';
var special = '!?=#*$@+-.';
var getRand = function(values) {
return values.charAt(Math.floor(Math.random() * values.length));
}
//+ Jonas Raoni Soares Silva
//@ http://jsfromhell.com/array/shuffle [v1.0]
function shuffle(o){ //v1.0
for(var j, x, i = o.length; i; j = Math.floor(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
return o;
};
var pass = [];
for(var i = 0; i < numLc; ++i) { pass.push(getRand(lcLetters)) }
for(var i = 0; i < numUc; ++i) { pass.push(getRand(ucLetters)) }
for(var i = 0; i < numDigits; ++i) { pass.push(getRand(numbers)) }
for(var i = 0; i < numSpecial; ++i) { pass.push(getRand(special)) }
return shuffle(pass).join('');
}Bookmarklet
Drag this Generate Passwords Bookmarklet into your browser bar if you like it.
Console output
Generating passwords:
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?Z0q5GvO9@bS2i
Vk.83dNvR1#u6Y
Dc*-NQFj42bh14
Vcf5i7T.!KU66e
K1=rd8Q8v0=IqN
Gs7b.z40F$4qEM
1#65-NfzBZvU3r
T*8V4kEm-89pSn
z422.Ik8HyG#Fq
@tK1e8?33tNVzG
r*94.ZZtD9ydC6
04fJBi?pH3j$Y2
9Dy!91js+LA9wJ
iK8@b5F6eC8kT=
4qdQ!!6n9VpR8H
jSbxQN=bY@6484
8kMX#!P78voe8J
mAtYn3#6C!qX48
X16Im-Hf0W+yn4
1cu=2aBG?7r5CA
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