I have a jQuery script that works fine within a WordPress post as long as I include a reference to the jQuery libarary within the post.

<script src="http://code.jquery.com/jquery-latest.js"></script>

From what I have read this is not the proper way to reference jQuery as it is already included within WordPress (using v3.4.2).

If I remove the inline reference the script fails and the console says that "$" is undefined. I also tried replacing "$" with "jQuery" according to articles that talk about NoConflict mode in jQuery.

My jQuery script can be viewed here in jsFiddle.


In order to use $ inside your script (You only need to change the wrapper of your script), use the following wrapper.

jQuery(document).ready(function($) {
    // $() will work as an alias for jQuery() inside of this function

Make sure you enqueue jQuery in one of your plugins or theme using wp_enqueue_script('jquery');

Read more on Codex


The following article contains useful tips on using jQuery with WordPress.


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  • +1 Thanks! That worked great. I changed the wrapper of the script and added the wp_enqueue_script('jquery'); to my functions.php file in my theme using the method explained in WP codex link you posted. – webworm Dec 10 '12 at 2:39

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