Traditional js conversion to vue

With the popularity and application of Vue, more and more projects use Vue as the front-end framework. For traditional JavaScript projects, how to convert them into Vue projects has also become an important issue. This article will introduce how to convert a traditional JavaScript project into a Vue project so that it can better adapt to the modern development model.

1. Understand Vue

Before starting the conversion, you first need to understand the basic concepts and usage of Vue. Vue is a lightweight JavaScript framework designed to simplify web development. It uses an HTML-like syntax to define user interfaces and provides a set of responsive tools to handle data and DOM updates.

The biggest difference between Vue and traditional JavaScript projects is its component development model. Components in Vue are independent modules that can be reused, can be nested, and have attributes such as life cycle, status, and methods. This component-based development model allows Vue to better organize the code structure and reduce the occurrence of duplicate code.

2. Refactoring the code

The first step in converting a traditional JavaScript project to a Vue project is to refactor the code. Before refactoring, detailed code analysis is required, splitting it into different components according to code functions, or integrating it into Vue components.

When refactoring the code, you can follow the following steps:

(1) Determine the root component of the application

Determine the application based on business needs and UI design root component. The root component is the entrance to the entire application and is responsible for rendering the overall structure of the application.

(2) Encapsulate JavaScript functions into Vue components

Encapsulating JavaScript functions into Vue components can better organize the code structure. Functions can be encapsulated as Vue components with responsive data and methods for easy use and reuse in Vue.

(3) Convert template to Vue template

It is very easy to convert HTML template to Vue template. Vue template only needs to add some Vue instructions to implement data binding and events. Monitoring and other functions. For example, convert the following HTML template:

<div>
  <h2>Hello, {{name}}!</h2>
  <button onclick="alert('Hello, ' + name + '!')">Click me</button>
</div>

to the following Vue template:

<template>
  <div>
    <h2>Hello, {{name}}!</h2>
    <button @click="clickHandler">Click me</button>
  </div>
</template>

<script>
export default {
  props: ['name'],
  methods: {
    clickHandler() {
      alert(`Hello, ${this.name}!`)
    }
  }
}
</script>

(4) Rewrite routing and state management

For those who need to use routing and state The managed code needs to be rewritten to Vue Router and Vuex. Vue Router is a routing management tool officially provided by Vue, which can easily perform route jumps and parameter transfers. Vuex is a state management tool officially provided by Vue, which can easily manage application state.

3. Integrate Vue components

After completing the code reconstruction, you need to integrate the Vue components into the application. You can introduce all components in the root component, or introduce other components in each component separately. When introducing components, you need to pay attention to the component's life cycle and state hooks.

When integrating Vue components, you can follow the following steps:

(1) Introduce the Vue library into the HTML page

Introduce the Vue library into the HTML page for convenience Use Vue framework.

<script src="https://cdn.jsdelivr.net/npm/vue@2.6.11/dist/vue.min.js"></script>

(2) Create a Vue instance

Start the application by creating a Vue instance. Configurations such as root components, routing, and state management can be defined in the Vue instance.

import Vue from 'vue'
import App from './App.vue'
import router from './router'
import store from './store'

new Vue({
  render: h => h(App),
  router,
  store
}).$mount('#app')

(3) Using other components in a component

Using other components in a component can be achieved by registering the component in the Vue instance. You can use the tag name of the Vue component in the component to introduce other components.

<template>
  <div>
    <child-component></child-component>
  </div>
</template>

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

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

4. Testing and optimization

After completing the code conversion and Vue integration, testing and optimization are required. You can use Vue's debugging tools to easily debug and optimize, such as Vue Devtools, Vue CLI, etc.

When testing and optimizing, you need to pay attention to the following points:

(1) Ensure responsive data synchronization

When using Vue’s responsive data, you need to ensure that the data Synchronize. If the data is not synchronized, it may cause page inconsistencies.

(2) Avoid repeated rendering

Avoiding repeated rendering can improve page performance and user experience. You can use Vue's virtual DOM and diff algorithm to avoid repeated rendering.

(3) Optimize network requests and data processing

Optimizing network requests and data processing in applications can improve application performance. You can use Vue's asynchronous components and lazy loading to optimize page loading speed, and use Vue's computed properties and methods to optimize data processing.

Summary

Converting a traditional JavaScript project to a Vue project requires detailed code analysis and reconstruction, and then integrating the Vue components into the application after reconstruction. During the conversion process, it is necessary to pay attention to the differences in component development models, routing and state management, and to conduct testing and optimization. By converting traditional JavaScript projects into Vue projects, you can better adapt to modern development models and improve application performance and maintainability.

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