gistfile1.txt

  passwordStrength: function(password) {
    if (typeof password == 'undefined') {
      return 'none';
    }

    var score = 0;
    score += Math.min(password.length, 10);
    
    var types = 0;
    if ((/[A-Z]/).test(password)) {types += 1;}
    if ((/[a-z]/).test(password)) {types += 1;}
    if ((/[0-9]/).test(password)) {types += 1;}
    if ((/[\!@#\$%^&*\(\)<>,.\/\?\\{}\[\]|`~]/).test(password)) {types += 1;}
    
    if (types == 2) {
      score += 7;
    }
    else if (types == 3) {
      score += 10;
    }
    else if (types == 4) {
      score += 15;
    }
    
    if (score >= 20) {
      return 'high';
    }
    else if (score >= 10) {
      return 'med';
    }
    else if (score > 0) {
      return 'low';
    }

    return 'none';
  }
});