Load jQuery library from Google CDN is always good for seo and better performance of site. Wordpress itself uses the jquery in all wordpress themes and loads automatically.
In every wordpress sites we used jquery wordpress slider plugins. Sliders are very important in wordpress sites. There are many requirements about sliders.
wordpress and jquery both are powerful tool. for plugin, we need date picker. In this article i showed how to implement jquery UI datepicker in wordpress
When you enqueue your script, it enqueues for the whole site including admin panel. Using wordpress hook you can include jquery ui in wordpress website.
Showing wordpress comment preview for comment box is always good for attracting the visitors. I shown code here for show the comments preview.
Wordpress tutorial for, Create an Autocomplete Search Field in wordpress. In wordpress also you can easily achieve the auto complete search form easily.
For without refresh if you want to show the pages and pagination in site than you can use the following code for add ajax pagination in wordpress blog.
we given smart way to use jquery in wordpress theme. In wordpress adding the Jquery is very easy because wordpress itself uses the Jquery for admin panel.