From Beginner to Mastery: Practical Development Guide for Vue and Axios

From Beginner to Mastery: Vue and Axios Practical Development Guide

Introduction:
In modern web development, front-end and back-end separation and data interaction have become an essential part. As a popular front-end framework, Vue.js can help us build highly interactive single-page applications (SPA). Axios, as a powerful HTTP request library, provides us with convenient data request and response processing methods. In this article, we will learn how to use Vue and Axios for practical development.

1. Vue Basics Introduction
   Before you start using Vue and Axios, you first need to understand the basics of Vue.js. The core concepts of Vue.js include data binding, directives, components, etc. The following is a simple Vue sample code:

<div id="app">
  <p>{{ message }}</p>
  <button v-on:click="changeMessage">Change Message</button>
</div>

<script>
  var app = new Vue({
    el: '#app',
    data: {
      message: 'Hello Vue!'
    },
    methods: {
      changeMessage: function() {
        this.message = 'Hello World!';
      }
    }
  });
</script>

In this example, we use Vue's data binding function to bind {{ message }} to # On the message attribute in ##data. When the button is clicked, the changeMessage method is called to modify the value of message, thereby updating the content on the page.

Basic use of Axios
2. Axios is a Promise-based HTTP request library that can be used in browsers and Node.js environments. Sending a request using Axios is very simple. Here is a basic sample code:
   

axios.get('/api/user')
  .then(function (response) {
    console.log(response.data);
  })
  .catch(function (error) {
    console.log(error);
  });

In this example, we use Axios to send a GET request to the

/api/user interface , and handles the response result of a successful request through the .then method, and handles the failure of the request through the .catch method.

Use Vue and Axios together
3. Now we combine Vue and Axios to implement a simple user list display function. First, we need to define a component in Vue to display the user list. The following is a sample code:
   

<template>
  <div>
    <ul>
      <li v-for="user in users" :key="user.id">{{ user.name }}</li>
    </ul>
  </div>
</template>

<script>
import axios from 'axios';

export default {
  data() {
    return {
      users: []
    };
  },
  mounted() {
    this.fetchUsers();
  },
  methods: {
    fetchUsers() {
      axios.get('/api/users')
        .then(response => {
          this.users = response.data;
        })
        .catch(error => {
          console.log(error);
        });
    }
  }
};
</script>

In this sample code, we define a Vue component, which uses the

v-for directive to traverse users Array that renders each user's name onto the page. In the mounted life cycle hook, call the fetchUsers method, send a GET request to the /api/users interface through Axios, and assign the returned user list Give users array.

Finally, we need to use the user list component we defined in the root component of Vue. Here is a sample code:

<template>
  <div>
    <h1>User List</h1>
    <user-list></user-list>
  </div>
</template>

<script>
import UserList from './UserList.vue';

export default {
  components: {
    UserList
  }
};
</script>

In this sample code, we nest the user list component

in the root component.

Summary:

Through the study of this article, we have learned the basic knowledge of Vue.js and the basic usage of Axios. And through an example, the combination of Vue and Axios was used to implement a simple user list display function. In actual development, the combination of Vue and Axios can help us quickly build highly interactive front-end applications and interact with back-end data. I hope this article will be helpful to your Vue and Axios development practice.

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