Overview

Vue.js (pronounced /vjuː/, like view) is a library for building interactive web interfaces. The goal of Vue.js is to provide the benefits of reactive data binding and composable view components with an API that is as simple as possible.

Vue.js itself is not a full-blown framework - it is focused on the view layer only. It is therefore very easy to pick up and to integrate with other libraries or existing projects. On the other hand, when used in combination with proper tooling and supporting libraries, Vue.js is also perfectly capable of powering sophisticated Single-Page Applications.

If you are an experienced frontend developer and want to know how Vue.js compares to other libraries/frameworks, check out the Comparison with Other Frameworks; if you are more interested about how Vue.js approaches larger-scale applications, check out the section on Building Larger-Scale Applications.

Reactive Data Binding

At the core of Vue.js is a reactive data-binding system that makes it extremely simple to keep your data and the DOM in sync. When using jQuery to manually manipulate the DOM, the code we write is often imperative, repetitive and error-prone. Vue.js embraces the concept of data-driven view. In plain words, it means we use special syntax in our normal HTML templates to “bind” the DOM to the underlying data. Once the bindings are created, the DOM will then be kept in sync with the data. Whenever you modify the data, the DOM updates accordingly. As a result, most of our application logic is now directly manipulating data, rather than messing around with DOM updates. This makes our code easier to write, easier to reason about and easier to maintain.