Vue.js is a JavaScript framework for building interactive websites, and it is one of the friendliest places to start if you are new to frontend frameworks. Its biggest strength is that it feels close to plain HTML, CSS, and JavaScript, so you can read a Vue file and understand what it does without learning a whole new way of thinking first.

How does Vue work? A Vue component is a single file with three parts: a template that looks like HTML, a script block with your JavaScript, and a style block with your CSS. When your data changes, Vue updates only the parts of the page that need to change. You do not write code to find elements and update them by hand — you describe what the page should look like for a given state, and Vue keeps the page in sync. That idea is called reactivity, and it is the core of Vue.

Vue is a good fit for beginners because it grows with you. You can start by adding Vue to a single HTML page with a script tag and making one button interactive.…