PiotrPress

Clearcode

The CC-Scripts plugin gives Admin users the ability to add custom JavaScript code to every page on WordPress website in the head/footer and/or directly after the opening body html tag. 
Additionally, you can minify scripts using JSMin php library and/or displaying it selectively using dependencies. 
The best part is that you can do this from the Admin panel, perfect for those who don’t have the programming skills needed to manually add custom JavaScript code to template files.

CC-Scripts

Add custom JavaScript code to all your WordPress pages at once via the Admin panel.

Sparanoid

Add you current theme slug to your HTML <code>body</code> class via <code>body_class</code> for easy customization
<ul>
<li>No database writes, no configurations, install, activate and go.</li>
<li>Easy styles customization via Jetpack Custom CSS or built-in Custom CSS (WordPress version 4.7 or higher required).</li>
</ul>

Current Theme Body Class

Add you current theme slug to your HTML body class for easy customization

CC-Scripts vs Current Theme Body Class