How to: show/hide a widget in WordPress with jQuery

In a previous post I talked about how to show/hide a single div html code with a search inside. Today I’d like to show you how I implemented jQuery into my new theme.

As seen in the current theme, I am using jQuery to animate the show/hide or as known as the css style display: none;.

Since I am using a custom child theme on my site, and have Hybrid theme as my parent, the widgets or sidebar section is different than may be in your theme. But just apply the the style’s as follows to your theme.

First make sure that your WordPress site is calling jQuery, by plugging in this code into your header.php file above the <?php wp_head(); ?> text:

<?php wp_enqueue_script('jquery'); ?>

Then anywhere above the </head >, plug this code in:

<script type="text/javascript">
function toggleWidgets() {
	$('#primary h3.widget-title').addClass('plus');

	$('#primary h3.widget-title').click(function() {

$(document).ready(function() {

That’s it. Pretty simple huh.

So lets go over what the code does.

$('#primary h3.widget-title').addClass('plus');

This line finds all <h3> tags with the class widget-title inside the ID parameter of #primary and adds a class of plus.


$('#primary h3.widget-title').click(function() {

Will apply a click function. When the H3 tag is clicked it will remove the class plus and add the class minus.

Then the code that says .next will then toggle the “next” element after the <h3> title.


  1. Rolograaf

    July 29, 2009

    Tried this, saw the javascript in the source of my blog, but the plus class was not added and click function not activated. Any idears what I could have done wrong?

    • Alik

      September 14, 2009

      Same problem here. In Firebug th script is there, but the class is not added to h3 widget class inside div ID primary.

      Any ideas?

      • Austin

        September 15, 2009

        Example links?

        • Alik

          September 18, 2009

          code is working now (I think so 😉 ) but the CSS class/definition for hide/unhide panels is missing (?).
          .-= Alik´s last blog ..Import blogu z do WordPress =-.

        • Chris

          September 28, 2009

          Doesn’t work for me. I don’t see the class added. I have the last jquery installed, I even tried the noConflict just in case and nothing.