password.js

Password generation and complexity checking without headache

• 
• 

Usage

Generate password

Password.generate(); // Generate password with default options ({specials: 1, nums: 2, uppers: 2, lowers: 3})
Password.generate(10); // Generate password with length 10 characters
Password.generate([8, 12]); // Generate password with length 8 to 12 characters
Password.generate(10, { specials: 3 }); // Generate password with 3 special characters and 10 characters long
Password.generate([8, 12], { specials: 3, nums: 2, uppers: 3, lowers: 2 }); // Full example

Example:

dom('.generate-password').on('click', function() {
  var password = Password.generate(),
      input    = dom('#password');

  input.set('type', 'text'); // Show generated password
  input.set('value', password);
});

Check password complexity

Password.score() calculates overall complexity score, where minimum value is 3 and maximum limited with Javascript string length

Password.score('badpass'); //=> 9
Password.score('M)f$you8Ag'); //=> 27

Password.rank() returns subjective complexity rank from 0 to 5

Password.rank('badpass'); //=> 0
Password.rank('N0tSobad'); //=> 2
Password.rank('M)f$you8Ag'); //=> 4

Some usage examples:

dom('#password').on('keydown', function(e) {
  var password = e.target.value,
      score    = Password.score(password);

  setComplexityBar(score);
});

var LEVELS = ['very weak', 'weak', 'normal', 'good', 'very good', 'amazing'];

dom('#password').on('keydown', function(e) {
  var password = e.target.value,
      score    = Password.rank(password);

  dom('#password-hint').set('text', LEVELS[score]);
});

Utils

• Password.Utils.shuffle(array) - shuffle array values
• Password.Utils.upperChar() - get random uppercase character
• Password.Utils.lowerChar() - get random lowercase character
• Password.Utils.anyChar() - get random character (upper- or lowercase)
• Password.Utils.special() - get random special character
• Password.Utils.charFrom(str) - get random char from given string
• Password.Utils.random(max, min) - get random number from given range (default min: 0)