Definition: Hi.js is a JavaScript library that provides a framework for building responsive, interactive web pages. The goal of Hi.js is to help developers create more engaging user experiences by simplifying UI/UX design tasks through code reuse. It supports a wide range of technologies and frameworks like React, Angular, Vue, and more. Definition: Hi.js is an open-source JavaScript library designed to simplify the process of building responsive web pages. It provides a framework for building interactive web applications, including tools and APIs that can help developers create engaging user experiences through code reuse.