jQuery was one of the most popular JavaScript libraries for a long time and has contributed significantly to the growth of web development. However, with the evolution of modern web development technologies, the use of jQuery has declined in recent years.

This is partly due to the emergence of new JavaScript frameworks and libraries, such as React, Vue.js, and Angular, which offer more advanced and modern approaches to building web applications. Many of these frameworks provide their own lightweight, fast and efficient methods for interacting with the DOM, which jQuery was originally designed to simplify.

Furthermore, modern browsers have improved their support for JavaScript, and many of the features that jQuery provided, such as AJAX requests and event handling, are now available in the native JavaScript API.

That being said, jQuery is still widely used and can be a useful tool for developers who need to work with legacy code or who require a quick and easy way to perform certain DOM manipulations or interactions. The library is also well-documented, has a large and active community, and is still supported with bug fixes and updates.

So, while jQuery may not be considered as “cool” or cutting-edge as it was a few years ago, it still has its place in the web development landscape and can be a valuable tool for developers who know how to use it effectively.