Some of the most common JavaScript libraries include:
1. JQuery – a fast, small, and feature-rich JavaScript library that simplifies HTML document traversing, event handling, and ajax interactions.
1. React – a popular open-source JavaScript library for building user interfaces.
1. Angular.js – a powerful framework for building dynamic web applications.
1. Node.js – an open-source, cross-platform JavaScript runtime environment that executes JavaScript code outside of a web browser.
1. Vue.js – a progressive framework for building user interfaces.
1. D3.js – a JavaScript library for visualizing data using HTML, SVG, and CSS.
1. Bootstrap – a popular CSS framework that helps developers build responsive, mobile-first websites.
1. Express.js – a web application framework for Node.js that provides a robust set of features for web and mobile applications.