How to quickly get started with the Vue 3 front-end development framework

How to quickly get started with the Vue 3 front-end development framework

Introduction:
Vue is a popular JavaScript front-end development framework that is simple, efficient and easy to use. Vue 3 is the latest version of the Vue framework, with many improvements in performance and development experience. This article will introduce how to quickly get started with Vue 3, and illustrate its basic usage and key concepts through code examples.

Environment settings:
Before we start, we need to make sure that Node.js and npm (Node Package Manager) are installed. You can check whether the installation is successful by entering the following command in the terminal:

node -v
npm -v

If you see the version number, the installation is successful.

Install Vue CLI:
Vue CLI is a command line tool that can be used to quickly create Vue projects and build environments. To install Vue CLI, just run the following command in the terminal:

npm install -g @vue/cli

Create Vue project:
After installing Vue CLI, we can use it to create a new Vue project. Enter the following command in the terminal:

vue create my-project

where my-project is the name of the project, which can be modified according to your own needs. After executing the command, an interactive interface will pop up, and you can select some configuration options as needed. For example, we can choose to use Babel or TypeScript, and whether to use the ESLint code inspection tool, etc.

Start the development server:
In the project root directory, run the following command to start the development server:

cd my-project
npm run serve

This will start a local development server for viewing and Test our Vue application.

Component basics:
The core concept in Vue is components. Components are the basic building blocks of Vue applications and can contain HTML, CSS, and JavaScript code. The following is a simple Vue component example:

<template>
  <div>
    <h1>{{ message }}</h1>
    <button @click="changeMessage">Change Message</button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      message: 'Hello Vue!'
    }
  },
  methods: {
    changeMessage() {
      this.message = 'Hello Vue 3!'
    }
  }
}
</script>

<style>
h1 {
  color: blue;
}
button {
  background-color: yellow;
}
</style>

In the above code, we define a component that contains a title and a button. Through the {{ message }} binding syntax, we can display the value of the message variable on the page. At the same time, we also defined the changeMessage method. After clicking the button, the value of message will be changed to "Hello Vue 3!".

In Vue, components can be nested, exist independently, and have separate scopes and life cycles. By using components, we can break complex applications into small and maintainable parts.

Component usage:
In Vue, we can use defined components in other components. Here is an example using the component defined above:

<template>
  <div>
    <h2>Parent Component</h2>
    <my-component></my-component>
  </div>
</template>

<script>
import MyComponent from './MyComponent.vue'

export default {
  components: {
    MyComponent
  }
}
</script>

In the above code, we import and register MyComponent and then use <my-component&gt in the template ;</my-component>Insert it into the parent component.

Summary:
Through this article, we learned how to quickly get started with the Vue 3 front-end development framework. We learned the basic environment setup steps, created a Vue project, and introduced the basics and usage of components in Vue. Vue 3 provides more features and performance improvements that can help us develop front-end applications more efficiently. After mastering the above basic content, we can further in-depth study the advanced features and practical skills of the Vue framework.

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