Use axios to upload files in vue
I have been learning axios recently, and then used it in the project, so this article mainly introduces you to the relevant information about using axios in vue to realize real-time update of file upload progress. The article first gives a brief introduction to axios and the method. Everyone understands learning. Friends who need it can learn together below.
axios Introduction
axios is a Promise-based HTTP client for browsers and nodejs. It has the following characteristics:
Create XMLHttpRequest from the browser
Issue an http request from node.js
Support Promise API
Interception of requests and responses
Convert request and response data
-
Cancel request
Automatically convert JSON data
The client supports preventing CSRF/XSRF
Introduction method:
$ npm install axios //使用淘宝源 $ cnpm install axios //或者使用cdn： <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
When installing other plug-ins, you can directly introduce them in main.js and use Vue.use() to register, but axios is not a vue plug-in, so you cannot use Vue.use (), so it can only be introduced immediately in each component that needs to send a request.
In order to solve this problem, after introducing axios, we modified the prototype chain to make it more convenient to use.
//main.js
import axios from 'axios' Vue.prototype.$http = axios
After adding these two lines of code to main.js, you can use the $http command directly in the component's methods
methods: {
postData () {
this.$http({
method: 'post',
url: '/user',
data: {
name: 'xiaoming',
info: '12'
}
})
}For more basic knowledge, you can refer to this article: //www.jb51.net/article/110324.htm
##vue uses axios to realize real-time update of file upload progress
The progress event has been added to the XHR level 2, whereby we can add a real-time data progress bar while the browser is receiving new data, thus making the interaction more friendlyvue template
<p class="progress" @click="upload"
:style="{backgroundImage:'linear-gradient(to right,#C0C7CB 0%,#C0C7CB '+progress+',#E1E6E9 '+progress+',#E1E6E9 100%)'}">vue-js
var form = new FormData()
form.append('file', vm.$refs.upload.files[0])
form.append('id', id)
form.append('type', type)
var config = {
onUploadProgress: progressEvent => {
var complete = (progressEvent.loaded / progressEvent.total * 100 | 0) + '%'
this.progress = complete
}
}
axios.post(`api/uploadFile`,
form, config).then((res) => {
if (res.data.status === 'success') {
console.log('上传成功')
}
})Is there an error when calling fs.renameSync in Node.js?
How to configure the React Native development environment in VSCode
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