“Created by John Resig in 2006, jQuery is the mother of all JavaScript frameworks. By far, it is the most-used framework in production, as you can see at http://libscore.com/#libs. The most important feature of jQuery is its famous JQuery selector syntax: var element = $('.my-class'). It may seem useless today but you have to consider that in 2006, browsers were not aligned as they are today. This is the real value that jQuery brought to the front-end world. jQuery created a lingua franca between the browsers. It helped the community to grow around a common ground. In addition to the selector syntax, a lot of features were added to the core project, such as AJAX requests, JQuery animations, and other utilities. It rapidly became the Swiss Army knife of front-end development. jQuery has an official UIKit called jQueryUI, which is easily pluggable, and so the web is full of plugins for every need. Today, front-end developers tend to joke about jQuery, but it’s been a cornerstone of modern web development.”