VUE3 Getting Started Example Tutorial

Vue.js is a popular JavaScript framework that is easy to use, convenient and flexible. Vue.js 3 is a brand new version that adds many new features and functionality. This article will introduce you to how to use Vue.js 3 for introductory example development to help you quickly master the basic knowledge of Vue.js 3.

1. New features of Vue.js 3
Vue.js 3 adds many new features compared to version 2.x, the most important new features include:

1. Writing code using TypeScript is more convenient;
2. Better performance, faster update throughput and less memory usage;
3. Better support for combined APIs, making Vue.js More modular and easy to extend;
4. New script engine and compiler, providing better performance and smaller package size.

2. Environment setup for Vue.js 3
To create a project using Vue.js 3, you need to install Node.js on your computer. Node.js is a server-side JavaScript environment for building efficient and scalable web applications. After completing the installation of Node.js, use the following command to install Vue.js 3: npm install -g vue.

3. Basic syntax of Vue.js 3
The following is the basic syntax of Vue.js 3, including template syntax, instructions, components, etc. of Vue.js 3:

1. Template syntax: Vue.js 3 uses {{}} to bind data, the v-bind directive to bind properties, and the v-on directive to bind events.
2. Directives: Vue.js 3 uses directives to operate on elements. Directives are special attributes starting with "v-". For example: v-if, v-else-if, v-else, v-for, v-bind, etc.
3. Components: Components are an important concept in Vue.js 3. They decompose pages into reusable modules and provide a simple way to perform component development.

4. Example development of Vue.js 3
The following is an example of Vue.js 3, which includes componentization and routing applications:

<template>
  <div>
    <nav>
      <router-link to="/">Home</router-link>
      <router-link to="/about">About</router-link>
      <router-link to="/contact">Contact</router-link>
    </nav>
    <router-view></router-view>
  </div>
</template>

<script>
import { createRouter, createWebHistory } from 'vue-router'
import Home from './components/Home.vue'
import About from './components/About.vue'
import Contact from './components/Contact.vue'

const routes = [
  { path: '/', component: Home },
  { path: '/about', component: About },
  { path: '/contact', component: Contact },
]

const router = createRouter({
  history: createWebHistory(),
  routes,
})

export default {
  router,
}
</script>

In In this example, we use Vue.js 3 to create a route that contains three page components: Home, About, and Contact.

5. Summary
Vue.js 3 provides developers with better flexibility and scalability. Its new features, basic syntax and component-based development make the Vue.js framework easy to use. and use. I hope that through this article's introduction to Vue.js 3's introductory example tutorial, you can quickly get started and start developing with Vue.js 3.

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