Vue3+TS+Vite development skills: how to build a maintainable and scalable application architecture

Vue3 TS Vite development skills: How to build a maintainable and scalable application architecture

Introduction:

With the continuous evolution of front-end technology, As an excellent front-end framework, Vue3 has become one of the first choices for most developers. With TypeScript and Vite, we can better build a maintainable and scalable application architecture. This article will introduce some Vue3 TS Vite development techniques, combined with code examples, to help readers understand better.

1. Project construction

First, we need to install the Vite scaffolding tool and create a new project. Open the terminal and enter the following command:

npm init vite@latest

Configure according to the prompts, select Vue 3, TypeScript and other related options, and follow the prompts to complete the project initialization.

2. Component development

1. Single file component

In Vue development, using single file components to manage our code is very efficient. The way. In Vue3, we can use the <script setup></script> syntax to define components, which can better manage the component's logic and templates in one file. For example, we create a HelloWorld component:

<template>
  <div>
    <h1>{{ message }}</h1>
  </div>
</template>

<script setup lang="ts">
import { ref } from 'vue';

const message = ref('Hello, World!');
</script>

In the above code, we use ref to define responsive data message and use it in the template .

2. Component communication

In large applications, communication between components is an important issue. Vue3 provides provide/inject and emits two ways to achieve communication between components.

provide/inject Data can be provided in ancestor components and used in descendant components. For example:

// 祖先组件
<script setup lang="ts">
import { provide } from 'vue';
import { userData } from './data';

provide('userData', userData);
</script>

// 后代组件
<script setup lang="ts">
import { inject } from 'vue';

const userData = inject<UserData>('userData');
</script>

In the above code, we provide a data named userData through provide, and then in the descendant component through inject to use.

emis Used for communication between parent and child components. For example:

// 子组件
<script setup lang="ts">
import { ref } from 'vue';

const count = ref(0);

const increment = () => {
  count.value++;
  emit('update:count', count.value);
}
</script>

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

// 父组件
<template>
  <div>
    <ChildComponent :count.sync="count" />
  </div>
</template>

<script setup lang="ts">
import { ref } from 'vue';

const count = ref(0);
</script>

In the above code, the child component triggers a custom event through emit and passes the data to the parent component. The parent component implements two-way binding through the .sync modifier.

3. State management

In large-scale applications, state management is very important. Vue3 provides a new state management library @vue/reactivity, which can help us better manage the state of the application.

We can use the state management library as a separate module, for example, create a store folder, then create a index.ts file in it, write The following code:

import { reactive } from 'vue';

export interface State {
  count: number;
}

const state = reactive<State>({
  count: 0,
});

export function increment() {
  state.count++;
}

Then, we can use this state and method in the component:

<script setup lang="ts">
import { ref } from 'vue';
import { increment } from '../store';

const count = ref(0);
const handleIncrement = () => {
  increment();
}
</script>

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

In this example, we store the state and method in separate files so that they can be used when needed time to visit.

4. Routing Management

For front-end applications, routing management is also a very important part. In Vue3, we can use vue-router to manage routing.

First, we need to install vue-router, enter the following command in the terminal:

npm install vue-router@4

Then, create a # in the src directory ##router folder, and create a index.ts file in it, write the following code:

import { createRouter, createWebHistory } from 'vue-router';

const routes = [
  {
    path: '/',
    name: 'Home',
    component: () => import('../views/Home.vue'),
  },
  {
    path: '/about',
    name: 'About',
    component: () => import('../views/About.vue'),
  },
];

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

export default router;

Then, introduce it in

main.ts router and use it:

import { createApp } from 'vue';
import App from './App.vue';
import router from './router';

createApp(App).use(router).mount('#app');

Now, we can use routing in the component:

<template>
  <router-link to="/">Home</router-link>
  <router-link to="/about">About</router-link>
  <router-view></router-view>
</template>

In this example, we pass

to generate navigation links, and render the components corresponding to the current route through .

Conclusion:

By using the combination of Vue3 TS Vite, we can better build a maintainable and scalable application architecture. During the development process, we can use single-file components, component communication, state management, and routing management to improve the readability and maintainability of the code. At the same time, we can also use TypeScript's static type checking and Vite's rapid construction capabilities to improve development efficiency. I hope this article will be helpful to Vue3 TS Vite development.

Reference materials:

Vue 3 official documentation: https://v3.vuejs.org/
• TypeScript official documentation: https://www.typescriptlang .org/
• Vite official documentation: https://vitejs.dev/

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