plej

var _passwordMinStrength=2;
var _passwordMinLength=8;

var _passwordStrengthRules = [
    {passwordStrength: 4, minLength: 8, charClassCount: 4},
    {passwordStrength: 3, minLength: 8, charClassCount: 3},
    {passwordStrength: 2, minLength: _passwordMinLength, charClassCount: 2},
    {passwordStrength: 1, minLength: _passwordMinLength, charClassCount: 1}
];



function calculatePasswordStrength(password) {
    var selectedStrength = 0;
    for (var i=0; i<_passwordStrengthRules.length; i++) {
        var minLength = _passwordStrengthRules[i].minLength;
        var charClassCount = _passwordStrengthRules[i].charClassCount;

        var classCount = 0;
        if(password.match(jQuery("#passwordPattern").val())){
            classCount+=2;
            if ((password.match(/[a-z�����깜]/g) || []).length >= 1) {
                classCount += 1;
            }
            if ((password.match(/[@!#$%^&*/?><]/g) || []).length >= 1) {
                classCount += 1;
            }
        }

        if (classCount >= charClassCount) {
            if(charClassCount>=3){
                if(password.length>=_passwordStrengthRules[i].minLength) {
                    selectedStrength = _passwordStrengthRules[i].passwordStrength;
                    break;
                }
            }else {
                selectedStrength = _passwordStrengthRules[i].passwordStrength;
                break;
            }
        }
    }
    return selectedStrength;
}

function checkPasswordStrength(passwordInput, passwordInfo, errorSpan,
        infoSpan, leftToRight) {


    var password = $(passwordInput).val();
    var calculatedStrength = calculatePasswordStrength(password);

    //info about safe password
    if (calculatedStrength == 4) {
        $(infoSpan).removeClass('hidden');
    } else{
        $(infoSpan).addClass('hidden');
    }

    //error about weak password
    if(calculatedStrength < _passwordMinStrength){
        var errmsg=$('#wrongPasswordSyntaxMsg').val();
        $(errorSpan).html(errmsg);
    } else{
        $(errorSpan).html('');
    }

    if (!$(passwordInfo).children().length && $(passwordInput).val().length >= _passwordMinLength)
        $(passwordInfo).append('<span></span><span></span><span></span><span></span>');

    if (leftToRight == true) {
        $(passwordInfo).children().each(function(index, item) {
            if (index < calculatedStrength)
                $(item).css("display", "block");
            else
                $(item).css("display", "none");

        });
    } else {
        $(passwordInfo).children().reverse().each(function(index, item) {
            if (index < calculatedStrength)
                $(item).css("visibility", "visible");
            else
                $(item).css("visibility", "hidden");
        });
    }
    return calculatedStrength;
}