Example of fetching data with Axios in a Vue component
Jul 24, 2025 am 02:36 AM
The steps to obtain data using Axios in Vue components are as follows: 1. Install Axios; 2. Introduce and use Axios to initiate GET requests within the component; 3. Use lifecycle hooks to trigger requests; 4. Handle asynchronous operations and state management; 5. Display content based on state in the template. First, install Axios through npm or yarn, then import and configure the data request method in the script part of the component, call the request function using the created hook, use async/await to handle the asynchronous process, and set loading and error status to improve the user experience. Finally, in the template, the corresponding content is displayed according to different states through the v-if, v-else-if and v-else instructions to ensure that the page is interactively friendly and complete.
Using Axios to get data in Vue components is a common requirement, especially when developing front-end applications that need to interact with the back-end API. Here is a simple but complete example showing how to use Axios to initiate a GET request in a Vue single file component to get data and display it on the page.
Install Axios
If you haven't installed Axios, you can install it via npm or yarn:
npm install axisos # or yarn add axis
Introducing and using Axios in Vue components
You can choose to introduce Axios locally in a single component, or you can register globally in an entry file such as main.js Here we take local use within the component as an example, so that it is clearer and controllable.
// MyComponent.vue
<script>
import axios from 'axios';
export default {
data() {
return {
posts: [],
loading: true,
error: null
};
},
created() {
this.fetchData();
},
methods: {
async fetchData() {
try {
const response = await axios.get('https://jsonplaceholder.typicode.com/posts');
this.posts = response.data;
this.loading = false;
} catch (err) {
this.error = 'Data loading failed, please try again later';
this.loading = false;
console.error(err);
}
}
}
};
</script>This code does a few things:
- Introduce Axios and use it to initiate GET requests.
- Use
created()lifecycle hook to trigger the request. - Use
async/awaitto handle asynchronous operations to make the code clearer. - Set load status and error prompts to improve user experience.
Template section: Display data or status information
Then you can display the content in the template according to different statuses:
<template>
<div>
<div v-if="loading">Loading data...</div>
<div v-else-if="error">{{ error }}</div>
<ul v-else>
<li v-for="post in posts" :key="post.id">
{{ post.title }}
</li>
</ul>
</div>
</template>Several Vue conditional rendering instructions are used here:
-
v-if="loading"displays loading prompt -
v-else-if="error"displays error message -
v-elsedisplays normal data list
Tips: Some common things to note
- Requesting addresses ensures cross-domain permission : If the backend does not set CORS, you may need to configure a proxy (such as configuring devServer.proxy through
vue.config.jsin the Vue CLI). - Don't omit error handling : it can help troubleshoot problems even if it's just printed to the console.
- Avoid duplicate requests : If components are frequently created and destroyed, be careful whether requests will be initiated multiple times in a short period of time.
- You can consider encapsulating the service layer : extracting Axios requests into separate service modules for easy reuse and maintenance.
Basically that's it. Although this example is simple, it covers the main process of using Axios to obtain data in Vue, and also includes state management and basic error handling.
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