JavaScript regex, searching for hashtags

Question

How can I search some text for any and all hashtags (alphanumeric AND underscore AND hyphen) and wrap them in span tags eg search

some_string = \"this is so         


        

Answer 1

Try this replace call:

EDIT: if you want to skip http://site.com/#tag kind of strings then use:

var repl = some_string.replace(/(^|\W)(#[a-z\d][\w-]*)/ig, '$1$2');