Introduction to Vue.js

What Is Vue.js?

Vue.js is a progressive JavaScript framework for building UIs with approachable templates and a powerful reactivity system.

Vue 3 focuses on the Composition API, better TypeScript support, and excellent performance.

<script setup>
const msg = 'Hello Vue'
</script>

<template>
  <h1>{{ msg }}</h1>
</template>

A tiny Vue 3 SFC with script setup.

Progressive Framework

Use Vue for a widget or an entire SPA — adopt incrementally.

• Prefer Vue 3 + Composition API.
• Use script setup for SFCs.
• Keep components focused.
• Lean on official docs.

Introduction to Vue.js Cheatsheet

Quick reference for patterns covered in this lesson.

Why Vue

Gentle learning curve plus a clear path to advanced patterns.

Common Mistakes

• Assuming Vue is only Options API.
• Confusing Vue with a backend.

Key Takeaways

• Introduction to Vue.js is a core Vue skill.
• Practice in a Vite app.
• Prefer clarity.
• Revisit docs for edge cases.