问题
Does anybody know any regex to restrict a string to specified number of lines and words for data validation of a field in google forms?
I have already tried the following expression
^(?:\b\w+\b[\s\r\n]*){1,250}$
That would limit to 250 words over multiple lines.
but it is not working when there is any special character in the string. Any help would be appreciated.
回答1:
Your [\s\r\n] matches any whitespace chars only. You may use \W to match any non-word char:
^\w+(?:\W+\w+){0,249}$
^^
Details:
^- start of string\w+- 1+ word chars(?:\W+\w+){0,249}- 0 to 249 (1 to 250 in total) sequences of:\W+- 1+ non-word chars\w+- 1+ word chars (that is, words separated with 1+ symbol, whitespace or punctuation)
$- end of string.
来源：https://stackoverflow.com/questions/43889293/limit-the-number-of-lines-or-words-using-regex-in-google-forms