Improvements of Vue3 over Vue2: a more advanced tool chain

Improvements of Vue3 over Vue2: A more advanced tool chain

With the continuous development of the front-end development field, a modern tool chain has become very important. Vue3, as a new version of Vue.js, brings many updates and improvements, especially in terms of toolchain. This article will introduce the tool chain improvements of Vue3 compared to Vue2, and demonstrate the convenience brought by these improvements through code examples.

1. Vue CLI 4

Vue CLI is a global installation tool that provides the development tools needed to develop Vue projects. Vue3 has made a major upgrade to Vue CLI, introducing Vue CLI 4. Compared with Vue2's Vue CLI 3, the new version brings more powerful and advanced features, such as support for multi-page applications, improvements to the plug-in system, and better support for TypeScript and CSS preprocessors.

The following is a sample code to create a Vue3 project using Vue CLI 4:

# 安装全局的Vue CLI 4
npm install -g @vue/cli

# 使用Vue CLI 4创建一个Vue3项目
vue create my-project
cd my-project

# 运行开发服务器
npm run serve

2. Composition API

The Options API in Vue2 handles complex There are some limitations when it comes to component logic. Vue3 introduces the Composition API, providing a more flexible and composable way to organize and reuse code. It allows us to organize related logic together and encapsulate it into reusable functions.

The following is a simple example of using the Composition API:

<template>
  <div>
    <p>{{ count }}</p>
    <button @click="increment">增加</button>
  </div>
</template>

<script>
import { ref } from 'vue';

export default {
  setup() {
    const count = ref(0);

    const increment = () => {
      count.value++;
    };

    return { count, increment };
  },
};
</script>

3. Vite

Vite is the next-generation front-end construction tool officially launched by Vue3. Compared with Webpack and Vue CLI in Vue2, Vite has the advantages of faster cold start, faster hot reload, and lower memory usage. It supports the use of TypeScript, CSS preprocessors, etc., and is simple to configure without cumbersome configuration files.

The following is a sample code for using Vite to create a Vue3 project:

# 使用npm初始化一个新项目
npm init vite@latest my-app
cd my-app

# 安装依赖
npm install

# 运行开发服务器
npm run dev

Summary:

Vue3 has brought many improvements to the tool chain compared to Vue2, including updates Vue CLI 4, flexible Composition API, and high-performance Vite. These improvements make developing Vue applications more convenient and efficient. With the popularity and promotion of Vue3, we can expect more powerful and advanced tool chains to bring more convenience and efficiency to our development.

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