Vue.js is a JavaScript framework for building user interfaces. Unlike other monolithic frameworks, Vue is designed from the ground up to be incrementally adoptable. The core library is focused on the view layer only, and is easy to pick up and integrate with other libraries or existing projects.
Vue is also perfectly capable of powering sophisticated Single-Page Applications when used in combination with modern tooling and supporting libraries.
To start using Vue.js, you need to include it in your project. You can do this by either downloading it or including it through a Content Delivery Network (CDN) like Google CDN or Microsoft CDN.
Here is an example:
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In the above example, we included Vue library from a CDN. And then, we created a new Vue instance with `new Vue()`, where we passed an object.
The `el` option in the Vue instance provides the Vue-powered application with an existing DOM element to mount on.
The `data` option provides the data that the view will react to. In this case, the `message` property is a reactive dependency: as soon as the value of `message` changes, any references to `message` in the view will be updated to the new value instantly.
When you load this HTML page, Vue.js compiles the DOM into a render function based on the templates. It creates a reactive dependency between the application state (data object) and the DOM, so it “reacts” to changes in the data and updates only the necessary parts of the DOM.
