Pls help me with regular expression. I have method to validate password using regex:
/^(?=.*[0-9])(?=.*[!@#$%^&*])[a-zA-Z0-9!@#$%^&*]{6,12}$/;
I need to add to this condition that password has to contain 2 capital letters.
Thx for help!
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1Search is your friend. See: Regular expression for a string that must contain minimum 14 characters, where at minimum 2 are numbers, and at minimum 6 are lettersridgerunner– ridgerunner2013-11-20 19:40:10 +00:00Commented Nov 20, 2013 at 19:40
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2 Answers
You can add another lookahead in your regex:
/^(?=.*[0-9])(?=(?:[^A-Z]*[A-Z]){2})(?=.*[!@#$%^&*])[a-zA-Z0-9!@#$%^&*]{6,12}$/;
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This is a really ugly way of checking password syntax. Your code would be much easier to read and debug if you split your checks into multiple steps.
For example:
/* Check for at least 2 capital letters */
if (!(/[A-Z][^A-Z]*[A-Z]/.test(password))) {
alert("Your password must contain at least two capital letters");
return false;
}
/* Check for at least 2 lower case letters */
if (!(/[a-z][^a-z]*[a-z]/.test(password))) {
alert("Your password must contain at least two lower case letters");
return false;
}
/* Check for at least one digit */
if (!(/[0-9]/.test(password))) {
alert("Your password must contain at least one digit");
return false;
}
... etc ...
