The jQuery library supports nearly all of the selectors included in CSS specifications 1-3. So, we dont worry about browsers gap.

To start learning jQuery works with CSS selectors, see below:

The jQuery library have the power of Cascading Style Sheets (CSS) selectors. It let us quickly and easily access elements or groups of elements in the Document Object Model (DOM). For starter, in this post, we will learn several these selector. What we will learn is about: The Document Object Model (DOM) The $() factory.

Downloading JQuery

You can point your browser to the official jQuery website (http://jquery.com). It is always up-to-date resources for code and everything that related to the library. When we want to use jQuery, we need a copy of jQuery. Please download from the official site.

To use jQuery, we dont need installation anything. Just place it on our site in a public location. No compilation. Just refer to the file's location from HTML document.