- Unfortunately, jQuery in WP is still 1.x, you can see the long history of working on a jQuery update for WP in Aaron Jorbin’s Upgrade to jQuery 3.x trac ticket.
Basics
- Chris Coyier. Using ‘$’ Instead of ‘jQuery’ in WordPress. digging into wordpress, 2019.
- Josh Pollock. Basic jQuery for WordPress Developers. caldera forms, 2016.
- Tom McFarlin.
- Creating jQuery Components in WordPress. 2017.
- Manipulating DOM in WordPress Using jQuery. wpengine, 2019.
- Beginner’s guide to using before(), after(), append(), prepend(), clone(), and wrap().
Enqueuing
- Daniel Pataki, Rick Crawshaw. How to Properly Add jQuery Scripts to WordPress. wpmudev, 2019.
- Daniel Pataki. Is Replacing Default WordPress Scripts Like jQuery a Good Idea? (and how to do it). wpmudev, 2017.
- Tom McFarlin. A Beginner’s Guide to Enqueuing jQuery. envatotuts+, 2013.
Building
- Fred Meyer. Making jQuery Plugins into WordPress Plugins. wpshout, 2014.
- Tom McFarlin. Incorporating the jQuery Date Picker Into the Post Editor Series. tutsplus, 2013.
- Part 1: Preparing the Plugin.
- Part 2: Save the Date.
- Soumitra Chakraborty. Creating a WordPress Post Text Size Changer Using jQuery. tutsplus, 2012.
- Alistair Rossini. Configure jQuery Plugins via WordPress Admin. tutsplus, 2012.
- Shane Osbourne. Create an FAQ Accordion for WordPress with jQuery UI. tutsplus, 2012.
Troubleshooting
- Tom McFarlin. Resolving WordPress jQuery Errors. 2013.