How to don't allow set only the same characters and only special sign – regex js

I’m looking for some regex pattern to:

• not allow set the same characters
• not allow only special signs.

So:

• 11111111 – not allow
• 1111811111 – allow
• rrrrrrrr – not allow
• rrrrrrrrrr5 – allow
• 11111111% – allow
• %$!@$!@@@@ – not allow
• %%%%%%%%%1 – allow

I found regex which is helpful for recognize that string has only special sign: /^\W*\w.*$/, but I don’t know how to join it with condition about not only repeated characters. Thansks for any advices.

>Solution :

You can assert not only the same characters and make sure to match at least a single word character.

^(?!(.)\1+$)[^\w\n]*\w.*$

Explanation

• ^ Start of string
• (?!(.)\1+$) Negative lookahead, assert not only the same characters in the string matching at least 2 characters
• [^\w\n]* Optionally match any character except a word character or newline
• \w Match at least a single word character
• .* Optionally match any character
• $ End of string

Regex demo

const regex = /^(?!(.)\1+$)[^\w\n]*\w.*$/;
[
  "11111111",
  "1111811111",
  "rrrrrrrr",
  "rrrrrrrrrr5",
  "11111111%",
  "%$!@$!@@@@",
  "%%%%%%%%%1",
  "a"
].forEach(s => {
  if (regex.test(s)) {
    console.log(s + " allow")
  } else {
    console.log(s + " not allow")
  }
});

If you don’t want to match any spaces in the string, you can match non whitespace chars using \S

^(?!(\S)\1+$)[^\w\s]*\w\S*$

Regex demo