Welcome to the "Vue 3 Complete Guide: From Beginner to Expert" tutorial! In the next 30 minutes, you'll embark on a journey that transforms you from a Vue 3 novice to a proficient developer. Whether you're new to Vue.js or looking to deepen your understanding, this guide is tailored to meet your needs.
We'll cover everything from setting up your development environment to building a real-world application, delving into both fundamental and advanced Vue 3 concepts. Let's get started!
A well-structured tutorial ensures that learners can follow along seamlessly, building upon their knowledge as they progress. Here's how we'll structure our 30-minute Vue 3 tutorial:
Script:
"Welcome to this comprehensive Vue 3 tutorial! Vue.js is a progressive JavaScript framework renowned for its simplicity and flexibility in building user interfaces. In this 30-minute guide, we'll take you from the basics to advanced concepts, empowering you to build robust Vue 3 applications."
"By the end of this tutorial, you'll have hands-on experience with Vue 3's core features, component architecture, state management, and more. Let's dive in!"
Visuals:
Script:
"Before we start coding, let's set up our development environment. We'll need Node.js and npm installed on your machine. If you haven't installed them yet, head over to Nodejs.org and download the latest version for your operating system."
"Once Node.js is installed, we'll use Vite to scaffold our Vue 3 project for a fast and efficient development experience. Open your terminal and run the following commands:"
npm create vite@latest my-vue3-app -- --template vue
cd my-vue3-app
npm install
npm run dev
"These commands will create a new Vue 3 project named 'my-vue3-app', install the necessary dependencies, and start the development server. You should now see a 'Hello, Vite + Vue!' message in your browser."
Visuals:
Script:
"Let's explore the fundamentals of Vue 3. We'll start with reactive data, templates, and directives."
"In Vue 3, reactivity is at the core. We use the ref()
and reactive()
functions to create reactive data sources."
"Here's a simple example of a reactive counter using ref()
:"
<template>
<div>
<h1>{{ message }}</h1>
<button @click="increment">Count: {{ count }}</button>
</div>
</template>
<script setup>
import { ref } from 'vue';
const message = ref('Hello, Vue 3!');
const count = ref(0);
function increment() {
count.value++;
}
</script>
"In this example, message
and count
are reactive variables. Clicking the button increments the count, and Vue automatically updates the DOM."
Visuals:
Script:
"Components are the building blocks of any Vue application. They allow you to encapsulate and reuse code efficiently."
"Let's create a parent and child component to understand how data flows between them."
ParentComponent.vue
<template>
<div>
<h1>Parent Component</h1>
<ChildComponent :title="parentTitle" @update-title="updateTitle" />
</div>
</template>
<script setup>
import { ref } from 'vue';
import ChildComponent from './ChildComponent.vue';
const parentTitle = ref('Vue 3 Tutorial');
function updateTitle(newTitle) {
parentTitle.value = newTitle;
}
</script>
ChildComponent.vue
<template>
<div>
<h2>{{ title }}</h2>
<input :value="title" @input="$emit('update-title', $event.target.value)" />
</div>
</template>
<script setup>
defineProps(['title']);
defineEmits(['update-title']);
</script>
"In this setup, the ParentComponent
passes a prop called parentTitle
to the ChildComponent
. The child component emits an event update-title
to update the title in the parent."
Visuals:
Script:
"Now, let's delve into some advanced features of Vue 3. We'll explore the Composition API, state management with Pinia, and routing with Vue Router."
"The Composition API offers a more flexible and organized way to compose component logic. Here's an example using ref()
, reactive()
, and computed()
:"
<template>
<div>
<button @click="count++">Count is: {{ count }}</button>
<p>Double Count: {{ doubleCount }}</p>
</div>
</template>
<script setup>
import { ref, computed } from 'vue';
const count = ref(0);
const doubleCount = computed(() => count.value * 2);
</script>
"Additionally, for state management, we'll use Pinia, Vue 3's recommended store. Here's a simple store setup:"
// store.js
import { defineStore } from 'pinia';
export const useTaskStore = defineStore('tasks', {
state: () => ({
tasks: [],
}),
actions: {
addTask(task) {
this.tasks.push(task);
},
},
});
"For routing, Vue Router allows us to navigate between different views seamlessly. Here's a basic setup:"
// router.js
import { createRouter, createWebHistory } from 'vue-router';
import HomeView from './views/HomeView.vue';
import AboutView from './views/AboutView.vue';
const routes = [
{ path: '/', component: HomeView },
{ path: '/about', component: AboutView },
];
const router = createRouter({
history: createWebHistory(),
routes,
});
export default router;
Visuals:
Script:
"To apply what we've learned, let's build a simple Todo App. This project will incorporate component communication, state management, and routing."
TodoApp.vue
<template>
<div>
<h1>Todo App</h1>
<input v-model="newTask" @keyup.enter="addTask" placeholder="Add a new task" />
<ul>
<li v-for="task in tasks" :key="task.id">{{ task.name }}
<button @click="deleteTask(task.id)">Delete</button>
</li>
</ul>
</div>
</template>
<script setup>
import { ref } from 'vue';
import { useTaskStore } from './store';
const taskStore = useTaskStore();
const newTask = ref('');
function addTask() {
if (newTask.value.trim()) {
taskStore.addTask({ id: Date.now(), name: newTask.value });
newTask.value = '';
}
}
function deleteTask(id) {
taskStore.deleteTask(id);
}
const tasks = taskStore.tasks;
</script>
"In this Todo App, we're using Pinia for state management. The user can add new tasks, which are stored in the global state, and delete existing ones."
Visuals:
Script:
"Congratulations! You've now built a Todo App and explored both fundamental and advanced Vue 3 concepts. To continue your Vue.js journey, consider exploring more about state management, advanced routing techniques, and integrating APIs."
"Here are some resources to help you further:"
"Keep practicing, building projects, and exploring the vast Vue ecosystem. Happy coding!"
Visuals:
Effective visual elements are crucial for maintaining viewer engagement and facilitating better understanding. Here's how to incorporate them into your Vue 3 tutorial:
Incorporating well-structured and commented code examples is essential for effective learning. Below are the code snippets used throughout the tutorial:
<template>
<div>
<h1>{{ message }}</h1>
<button @click="increment">Count: {{ count }}</button>
</div>
</template>
<script setup>
import { ref } from 'vue';
const message = ref('Hello, Vue 3!');
const count = ref(0);
function increment() {
count.value++;
}
</script>
ParentComponent.vue
<template>
<div>
<h1>Parent Component</h1>
<ChildComponent :title="parentTitle" @update-title="updateTitle" />
</div>
</template>
<script setup>
import { ref } from 'vue';
import ChildComponent from './ChildComponent.vue';
const parentTitle = ref('Vue 3 Tutorial');
function updateTitle(newTitle) {
parentTitle.value = newTitle;
}
</script>
ChildComponent.vue
<template>
<div>
<h2>{{ title }}</h2>
<input :value="title" @input="$emit('update-title', $event.target.value)" />
</div>
</template>
<script setup>
defineProps(['title']);
defineEmits(['update-title']);
</script>
<template>
<div>
<button @click="count++">Count is: {{ count }}</button>
<p>Double Count: {{ doubleCount }}</p>
</div>
</template>
<script setup>
import { ref, computed } from 'vue';
const count = ref(0);
const doubleCount = computed(() => count.value * 2);
</script>
// store.js
import { defineStore } from 'pinia';
export const useTaskStore = defineStore('tasks', {
state: () => ({
tasks: [],
}),
actions: {
addTask(task) {
this.tasks.push(task);
},
deleteTask(id) {
this.tasks = this.tasks.filter(task => task.id !== id);
},
},
});
// router.js
import { createRouter, createWebHistory } from 'vue-router';
import HomeView from './views/HomeView.vue';
import AboutView from './views/AboutView.vue';
const routes = [
{ path: '/', component: HomeView },
{ path: '/about', component: AboutView },
];
const router = createRouter({
history: createWebHistory(),
routes,
});
export default router;
<template>
<div>
<h1>Todo App</h1>
<input v-model="newTask" @keyup.enter="addTask" placeholder="Add a new task" />
<ul>
<li v-for="task in tasks" :key="task.id">{{ task.name }}
<button @click="deleteTask(task.id)">Delete</button>
</li>
</ul>
</div>
</template>
<script setup>
import { ref } from 'vue';
import { useTaskStore } from './store';
const taskStore = useTaskStore();
const newTask = ref('');
function addTask() {
if (newTask.value.trim()) {
taskStore.addTask({ id: Date.now(), name: newTask.value });
newTask.value = '';
}
}
function deleteTask(id) {
taskStore.deleteTask(id);
}
const tasks = taskStore.tasks;
</script>
You've now built a solid foundation in Vue 3, covering everything from setting up your environment to creating complex, state-managed applications. Here's a quick recap of what we've covered:
To continue advancing your Vue.js skills, consider exploring more complex state management patterns, integrating APIs, and optimizing your applications for performance.
Thank you for following along! Keep building, experimenting, and expanding your Vue 3 expertise.