jQuery detect input fields are blank
<p>Using jQuery how can check if all input fields (EXCL hidden fields) and textareas are blank? I'm not sure how to "loop" through all form fields and check for:</p>

<blockquote>
  <p>$("input").val()
  and
  $("textarea).val()</p>
</blockquote>

<p>This is to run a function that should only "work" if all form fields are blank.</p>
