CODEWITHSUNDEEP
javascriptregex
jdimona
jdimona

Reputation: 1247

A regex to match strings with alphanumeric, spaces and punctuation

I need a regular expression to match strings that have letters, numbers, spaces and some simple punctuation (.,!"'/$). I have ^[A-Za-z0-9 _]*[A-Za-z0-9][A-Za-z0-9 _]*$ and it works well for alphanumeric and spaces but not punctuation. Help is much appreciated.

Upvotes: 21

Views: 61524

Answers (3)

Tarun Gupta
Tarun Gupta

Reputation: 6403

<script type="text/javascript">
check("hello dfdf asdjfnbusaobfdoad fsdihfishadio fhsdhf iohdhf");
function check(data){
var patren=/^[A-Za-z0-9\s]+$/;
    if(!(patren.test(data))) {
       alert('Input is not alphanumeric');       
       return false;
    }
    alert(data + " is good");
}
</script>

Upvotes: 1

Tim Pietzcker
Tim Pietzcker

Reputation: 336158

Assuming from your regex that at least one alphanumeric character must be present in the string, then I'd suggest the following:

/^(?=.*[A-Z0-9])[\w.,!"'\/$ ]+$/i

The (?=.*[A-Z0-9]) lookahead checks for the presence of one ASCII letter or digit; the nest character class contains all ASCII alphanumerics including underscore (\w) and the rest of the punctuation characters you mentioned. The slash needs to be escaped because it's also used as a regex delimiter. The /i modifier makes the regex case-insensitive.

Upvotes: 2

CaNNaDaRk
CaNNaDaRk

Reputation: 1322

Just add punctuation and other characters inside classes (inside the square brackets):

[A-Za-z0-9 _.,!"'/$]*

This matches every string containing spaces, _, alphanumerics, commas, !, ", $, ... Pay attention while adding some special characters, maybe you need to escape them: more info here

Upvotes: 39

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