Move jQuery to Footer

Some WordPress Plugins will attempt to load jQuery into the document <head>, but this can have a negative impact on performance.

A better option is to load jQuery near the bottom of the document; here’s how you can force jQuery to appear in the proper location:

Note: These instructions assume you are using a PHP customization class to organize your custom code.

public function front_end() {
	/* Hooks and filters that affect the front end _only_ go here */
	add_action('wp_enqueue_scripts', array($this, 'move_jquery'));
}

public function move_jquery() {
	wp_scripts()->add_data('jquery', 'group', 1);
	wp_scripts()->add_data('jquery-core', 'group', 1);
	wp_scripts()->add_data('jquery-migrate', 'group', 1);
}