I use this pattern in input tag type password to accept a strong password. "Must contain at least one number, one uppercase and lowercase letter, and one special character ,minimum of 8 characters, and maximum of 26 characters". But when I inserted one of these characters <>,./'";
the field title keep appearing. I would like to implement all special characters in my registration form
<form>
<input pattern="^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$" />
<input type="submit" />
</form>
(?=.*[0-9]) require one digit anywhere
(?=.*[a-z]) require one lowercase letter anywhere
(?=.*[A-Z]) require one uppercase letter anywhere
(?=.*[^0-9a-zA-Z]) require one symbol anywhere
^.{8,26}$ match any string of 8 to 26 characters
Combine all of these together and you get:
^(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[^0-9a-zA-Z]).{8,26}$
This, of course, counts anything that isn't a letter from A to Z or a digit as a special character, including accented letters, letters from other alphabets, and whitespace.