Vue.js is a progressive JavaScript framework for building user interfaces. Unlike monolithic frameworks, Vue is designed to be incrementally adoptable — its core library focuses solely on the view layer, making it easy to integrate into existing projects or use as the foundation for a full-featured single-page application.
Vue’s reactivity system tracks dependencies automatically at the component level, and its single-file component (SFC) format collocates template, script, and style in one .vue file for maintainable authoring.