How to pass value to backend in vue

Vue is a popular front-end framework that allows data interaction with the back-end. When data interaction occurs between the front-end and the back-end, it is often necessary to pass data from the front-end to the back-end. So, how do you pass values ​​to the backend in Vue? This article will discuss the following aspects.

1. Use Axios for data requests

Axios is a popular lightweight HTTP client that can be used to make data requests in Vue. The following is the basic usage of Axios:

1. Introduce Axios into Vue:

import axios from 'axios'

2. Send HTTP request:

axios({
  method: 'get',
  url: '/api/getData',
  params: {
    id: 1
  }
})
  .then(function (response) {
    console.log(response.data)
  })
  .catch(function (error) {
    console.log(error)
  })

In this example, we are backend A GET request was sent, the request address was '/api/getData', and the request parameter was id=1. When the request is successful, we print the data returned by the backend to the console.

2. Use Fetch to make data requests

Fetch is a native JavaScript API that can also be used to make data requests in Vue. The following is the basic usage of Fetch:

1. Send HTTP request:

fetch('/api/getData?id=1')
  .then(function (response) {
    return response.json()
  })
  .then(function (data) {
    console.log(data)
  })
  .catch(function (error) {
    console.log(error)
  })

In this example, we send a GET request to the backend, and the requested address is '/api/getData ', the requested parameter is id=1. When the request is successful, we print the data returned by the backend to the console.

3. Use Vue-resource to make data requests

Vue-resource is a Vue plug-in that can be used to make data requests in Vue. The following is the basic usage of Vue-resource:

1. Introduce Vue-resource into Vue:

import Vue from 'vue'
import VueResource from 'vue-resource'

Vue.use(VueResource)

2. Send HTTP request:

this.$http.get('/api/getData', {
  params: {
    id: 1
  }
})
  .then(function (response) {
    console.log(response.body)
  })
  .catch(function (error) {
    console.log(error)
  })

In this example, We sent a GET request to the backend, the request address was '/api/getData', and the request parameter was id=1. When the request is successful, we print the data returned by the backend to the console.

Summary:

The above are three ways to pass values ​​to the backend in Vue. No matter which method is used, we need to pay attention to the following points:

1. The request address and requested parameters need to correspond to the back-end API.
2. The request method needs to correspond to the backend API.
3. When sending a request, you need to handle the success and failure of the request.
4. You need to pay attention to cross-domain issues when making requests.

The above is an introduction to passing values ​​to the backend in Vue. I hope it will be helpful to readers.

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