JavaScript正则表达式可匹配2个单词和一个长度受限制的空白字符

Question

I actually got this regex ^[A-zÀ-ÿ ]{3,50}$ or ^[A-zÀ-ÿ\\s]{3,50}$ that finds 3 to 50 characters of this specific alphabets. I need a new regex to accept only 1 whitespace character \\s maintaining the {3,50} limitation.

I tried ^[A-zÀ-ÿ]+\\s[A-zÀ-ÿ]{3,50}$ but it is limiting the last tuple to 3-50 and not the whole thing.

Any help would be appreciated, Thank you

Answer 1

Actually, to match ASCII letters, you need to use [A-Za-z] , not [Az] (see this SO thread ).

As for the single obligatory whitespace, it can be added as in your attempt, and the length limitation can be added in the form of a lookahead:

/^(?=.{3,50}$)[A-Za-zÀ-ÿ]+\s[A-Za-zÀ-ÿ]+$/
  ^^^^^^^^^^^^ 

See the regex demo .