This article show multiple ways how to identify which version of jQuery is used on the page. Finding the jquery version is made easy.
Getting and setting the value and the text of a selectbox using jQuery is very simple. Get selectbox value, get selectbox text, set selectbox value, set selectbox text, get selectedIndex, set selectedIndex ,etc. using jQuery are mentioned in this article.
Pre-loading the images is often necessary when using a new image content which was never used before on the page. This article shows the easiest way to pre-load the images with jQuery.
This article explains how to detect browser type and version using jQuery. $.browser property is explained in this article