Javascript中密码验证的正则表达式

Question

Regex Password complexity requires that any three of the following four characteristics must be applied when creating or changing a password.

• Alpha characters - at least 1 upper case alpha character
• Alpha characters - at least 1 lower case alpha character
• Numeric characters - at least 1 numeric character
• Special characters - at least 1 special character

I am trying with the following code, but its not working for special characters

(?=^.{6,}$)((?=.*\d)(?=.*[A-Z])(?=.*[a-z])|(?=.*\d)(?=.*[^A-Za-z0-9])(?=.*[a-z])|(?=.*[^A-Za-z0-9])(?=.*[A-Z])(?=.*[a-z])|(?=.*\d)(?=.*[A-Z])(?=.*[^A-Za-z0-9]))^.*

I want my regex to be validated against the following 4 cases

Match cases

• P@ssword
• Password1
• p@ssword1
• p@12345

Answer 1

I think a single regex will be messy in this case. You can easily do something like

var count = 0;

count += /[a-z]/.test(password) ? 1 : 0;
count += /[A-Z]/.test(password) ? 1 : 0;
count += /\d/.test(password) ? 1 : 0;
count += /[@]/.test(password) ? 1 : 0;

if(count > 2) {
    alert('valid')
}

Answer 2

I think that a regex you can use is:

(?=^.{6,}$)(?=.*[0-9])(?=.*[A-Z])(?=.*[a-z])(?=.*[^A-Za-z0-9]).*

I'm not sure why you have so many or operators in your regex but this one matches if:

• (?=^.{6,}$) - String is > 5 chars
• (?=.*[0-9]) - Contains a digit
• (?=.*[AZ]) - Contains an uppercase letter
• (?=.*[az]) - Contains a lowercase letter
• (?=.*[^A-Za-z0-9]) - A character not being alphanumeric.

Answer 3

Use this Regex :

(?=^.{6,10}$)(?=. \\d)(?=. [az])(?=. [AZ])(?=. [!@#$%^&*()_+}{":;'?/>.<,])(?!. \\s). $**

Answer 4

I think you would need this for all special characters too : [updated to reject space]

    $(document).ready(function(){
    $('input').change(function(){
    var count = 0;
    var pass = $(this).val();
        count += /[a-z]/.test(pass) ? 1 : 0;
        count += /[A-Z]/.test(pass) ? 1 : 0;
        count += /\d/.test(pass) ? 1 : 0;
        count += /[^\w\d\s]/.test(pass) ? 1 : 0;
        (count>2 & !/[\s]+/.test(pass)) ? $(this).css('background-color','lime'):$(this).css('background-color','orange');
    });

});

and the fiddle : jsFiddle

Answer 5

var pattern = new RegExp(/^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?]).{6,}$/);

    if(pattern.test(value)){
         return true;
    } else {
         return false;
    }

Its working fine with special character also.

Answer 6

Non English UTF-8<\/h2>

None of the solutions given allow international letters, ie éÉöÖæÆáÁ, but mainly focus on the english ASCII<\/code> alphabet.