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  3. Selector relation
<html>
  <head>
    <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
    <script type="text/javascript">
  $(document).ready(function(){
     $("label + input").css("color", "red").val("value")
  });
    </script>

  </head>
  <body>
      <form>
        <label>Name:</label>
        <input name="name" />
        <fieldset>
          <label>Address:</label>
          <input name="newsletter" />
        </fieldset>
      </form>
      <input name="none" />

  </body>
</html>








30.9.Selector relation
30.9.1.prev + next
30.9.2.prev ~ siblings
30.9.3.parent() matches all elements that are parents
30.9.4.next(prev, next): Finds all inputs that are next to a label.
30.9.5.has(selector) matches the specified selector.
30.9.6.descendant(ancestor, descendant): Finds all input descendants of forms.
30.9.7.Select inside body tag
30.9.8.Select if DIV has another tag
30.9.9.Match parents
30.9.10.Remove all elements that have a descendant ol element