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### removeClass( [class], [duration] )

Removes the specified class from the set of matched elements with an optional transition.
Arguments:

class (Optional) | String |
One CSS class to remove from the elements.
duration (Optional) | String, Number |
A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).

Examples:

Name | Type
--- | ---

- Demo
- View Source

Remove the class 'blue' from the matched elements with a 1-second transition.

    $("p").removeClass("blue", 1000);

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
                        "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
      <script src="http://code.jquery.com/jquery-latest.js"></script>

      <script src="http://ui.jquery.com/latest/ui/effects.core.js"></script>

      <script>
      $(document).ready(function(){
        $("p").removeClass("blue", 1000);
      });
      </script>
      <style>
      p { margin: 4px; font-size:16px; font-weight:bolder; }
      .blue { color:blue; }
      .under { text-decoration:underline; }
      .highlight { background:yellow; }
      </style>
    </head>
    <body>
      <p class="blue under">Hello</p>
      <p class="blue under highlight">and</p>
      <p class="blue under">then</p>
      <p class="blue under">Goodbye</p>
    </body>
    </html>