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I'm trying to create a Regex test in JavaScript that will test a string to contain any of these characters:

!$%^&*()_+|~-=`{}[]:";'<>?,./

More Info If You're Interested :)

It's for a pretty cool password change application I'm working on. In case you're interested here's the rest of the code.

I have a table that lists password requirements and as end-users types the new password, it will test an array of Regexes and place a checkmark in the corresponding table row if it... checks out :) I just need to add this one in place of the 4th item in the validation array.

var validate = function(password){
    valid = true;

    var validation = [
        RegExp(/[a-z]/).test(password), RegExp(/[A-Z]/).test(password), RegExp(/\d/).test(password), 
        RegExp(/\W|_/).test(password), !RegExp(/\s/).test(password), !RegExp("12345678").test(password), 
        !RegExp($('#txtUsername').val()).test(password), !RegExp("cisco").test(password), 
        !RegExp(/([a-z]|[0-9])\1\1\1/).test(password), (password.length > 7)
    ]

    $.each(validation, function(i){
        if(this)
            $('.form table tr').eq(i+1).attr('class', 'check');
        else{
            $('.form table tr').eq(i+1).attr('class', '');
            valid = false
        }
    });

    return(valid);

}

Yes, there's also corresponding server-side validation!

I'm trying to create a Regex test in JavaScript that will test a string to contain any of these characters:

!$%^&*()_+|~-=`{}[]:";'<>?,./

More Info If You're Interested :)

It's for a pretty cool password change application I'm working on. In case you're interested here's the rest of the code.

I have a table that lists password requirements and as end-users types the new password, it will test an array of Regexes and place a checkmark in the corresponding table row if it... checks out :) I just need to add this one in place of the 4th item in the validation array.

var validate = function(password){
    valid = true;

    var validation = [
        RegExp(/[a-z]/).test(password), RegExp(/[A-Z]/).test(password), RegExp(/\d/).test(password), 
        RegExp(/\W|_/).test(password), !RegExp(/\s/).test(password), !RegExp("12345678").test(password), 
        !RegExp($('#txtUsername').val()).test(password), !RegExp("cisco").test(password), 
        !RegExp(/([a-z]|[0-9])\1\1\1/).test(password), (password.length > 7)
    ]

    $.each(validation, function(i){
        if(this)
            $('.form table tr').eq(i+1).attr('class', 'check');
        else{
            $('.form table tr').eq(i+1).attr('class', '');
            valid = false
        }
    });

    return(valid);

}

Yes, there's also corresponding server-side validation!

• javascript
• jquery
• regex

Share Improve this question Follow edited Sep 17, 2016 at 20:58 pixelbobby asked Dec 2, 2011 at 16:38 pixelbobbypixelbobby 4,44055 gold badges3131 silver badges5050 bronze badges 4

• 12 It's quite funny that the answer to your question lies in the title with the exception of escaping special characters and enclosing forward slashes. – sciritai Commented Dec 2, 2011 at 16:46
• 1 Why not use .addClass("check") and .removeClass("check")? And seeing if (someBoolean == true) in code always makes me cringe. Just do if (someBoolean). Or, better yet, just do $(".form table tr").eq(i+1).toggleClass("check", !!this); valid = valid && !!this;. – gilly3 Commented Dec 2, 2011 at 16:46
• +1 @gill3 thx for the code review- great feedback indeed. I've def used those short-hand methods in the past. – pixelbobby Commented Dec 2, 2011 at 17:59
• @gilly3, it appears to work great in FF but !IE8. love this short-hand. I'm trying to figure out what IE8 is doing differently. – pixelbobby Commented Dec 2, 2011 at 18:14

Add a comment  | 

7 Answers 7

Sorted by: Reset to default 203

The regular expression for this is really simple. Just use a character class. The hyphen is a special character in character classes, so it needs to be first:

/[-!$%^&*()_+|~=`{}\[\]:";'<>?,.\/]/

You also need to escape the other regular expression metacharacters.

Edit: The hyphen is special because it can be used to represent a range of characters. This same character class can be simplified with ranges to this:

/[$-/:-?{-~!"^_`\[\]]/

There are three ranges. '$' to '/', ':' to '?', and '{' to '~'. the last string of characters can't be represented more simply with a range: !"^_`[].

Use an ACSII table to find ranges for character classes.

Answer

/[\W\S_]/

Explanation

This creates a character class removing the word characters, space characters, and adding back the underscore character (as underscore is a "word" character). All that is left is the special characters. Capital letters represent the negation of their lowercase counterparts.

\W will select all non "word" characters equivalent to [^a-zA-Z0-9_]
\S will select all non "whitespace" characters equivalent to [ \t\n\r\f\v]
_ will select "_" because we negate it when using the \W and need to add it back in

The most simple and shortest way to accomplish this:

/[^\p{L}\d\s@#]/u

Explanation

[^...] Match a single character not present in the list below

• \p{L} => matches any kind of letter from any language

• \d => matches a digit zero through nine

• \s => matches any kind of invisible character

• @# => @ and # characters

Don't forget to pass the u (unicode) flag.

A simple way to achieve this is the negative set [^\w\s]. This essentially catches:

• Anything that is not an alphanumeric character (letters and numbers)
• Anything that is not a space, tab, or line break (collectively referred to as whitespace)

For some reason [\W\S] does not work the same way, it doesn't do any filtering. A comment by Zael on one of the answers provides something of an explanation.

// The string must contain at least one special character, escaping reserved RegEx characters to avoid conflict
  const hasSpecial = password => {
    const specialReg = new RegExp(
      '^(?=.*[!@#$%^&*"\\[\\]\\{\\}<>/\\(\\)=\\\\\\-_´+`~\\:;,\\.€\\|])',
    );
    return specialReg.test(password);
  };

to build upon @jeff-hillman answer, this is the complete version

/[\\@#$-/:-?{-~!"^_`\[\]]/

Tests

function noSpecialChars(str) {
  const match = str.match(/[\\@#$-/:-?{-~!"^_`\[\]]/)
  if (!match) return
  
  throw new Error("got unsupported characters: " + match[0])
}

// prettier-ignore
const symbols = ["!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "-", "_", "+", "=", ".", ":", ";", "|","~","`","{","}","[","]","\"","'","<",">","?","/", "\\"]

symbols.forEach((s) => {
  it(`validates no symbol ${s}`, async () => {
    expect(() => {
      noSpecialChars(s)
    }).toThrow();
  })
})

How about (?=\W_)(?=\S).? It checks that the character matched by the . is not a word character (however _ is allowed) and that it's not whitespace.

Note: as @Casimir et Hippolyte pointed out in another comment, this will also match characters like é and such. If you don't expect such characters then this is a working solution.

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