I am trying to create a regular expression using the below restriction, but maybe I am missing something, because it creates a wrong output.
Restrictions:
1) String shouldn't contain numbers only
2) String shouldn't contain more than 3 special characters
3) String has not any word (substring) which has length more than 10 characters
4) String length must be 3 or greater
I have created a regex which solves the 1st point:
/^\d*[a-zA-Z][a-zA-Z\d]*$/
But I failed with adding the other restrictions 2-4.
You may use a regex like
^(?!\d+$)(?!(?:[^$&%@]*[$&%@]){4})(?!.*\b\w{11}).{3,}$
See the regex demo
Pattern breakdown:
^ - start of string(?!\d+$) - there must not be only digits (\d+) up to the end of string ($)(?!(?:[^$&%@]*[$&%@]){4}) - there must not be 4 sequences of 0+ non-special characters ([^$&%@]*) followed with a special character(?!.*\b\w{11}) - there must not be a word having 11 word characters (\w{11}) after a word boundary (\b).{3,} - 3+ any characters$ - end of string