title: Jquery check if value is numeric
body: <p>I was wondering if anybody had a quick and dirty jquery method that will check if a value is numeric or not?  I was thinking about using a regex type method to check the value, if not do not submit the form.  I was using jquery validation, but I am running into issues just loading jquery validation.  </p>
  
  <p>I just have one value that I want to make sure is numeric.</p>