This document discusses using JavaScript libraries like D3.js with WordPress. It provides an overview of JavaScript and how it can be used with WordPress through plugins, themes, and content. It then discusses best practices for including JavaScript libraries and code in WordPress, such as using wp_enqueue_script() to add scripts, the Shortcode API to include scripts in content, or directly in page templates, header.php, or footer.php files. Examples of JavaScript libraries and plugins for adding interactive charts to WordPress content are also provided.