How to call the interface vue

Vue is a very popular JavaScript framework that is widely used in Web front-end development. It provides many powerful functions and tools, allowing developers to build modern Web applications more efficiently.

Among them, Vue's component development and interface calling functions are very important and commonly used parts. This article will start with the calling of interfaces in Vue and explore how to call interfaces in Vue.

1. The basic concept of interface calling

In Web development, interface refers to the communication method between programs, which is used to realize data interaction and sharing between different systems. In Vue, interface calls are usually implemented using Ajax technology to achieve asynchronous interaction and data transmission, while also improving user experience and page performance.

Actually, the way to call the interface in Vue is the same as the ordinary JavaScript call. We can use the $http and axios libraries provided in Vue to achieve this. The following is an introduction to the basic usage of these two libraries.

2. Use the $http library to make interface calls

Vue provides the $http library, which is based on the encapsulation of the XMLHttpRequest object. Using this library can facilitate asynchronous data requests and responses. The specific example code is as follows:

export default {
  data() {
    return {
      books: [],
    }
  },
  mounted: function () {
    var vm = this;
    vm.$http.get('/api/v1/books')
      .then(function (response) {
        vm.books = JSON.parse(response.body);
      }, function (error) {
        console.log(error);
      });
  },
}

In the above code, we use the $http library in the component's mounted life cycle function to make data requests. By initiating The get request obtains the data of the /books interface from the server and loads the data into the books array of the component.

In the process of calling the $http library, we can also configure request parameters, request headers, etc. For details, please refer to the Vue official documentation.

3. Use the axios library to make interface calls

In addition to the $http library, Vue can also use the axios library to make interface calls. axios is a Promise-based HTTP library that can simplify HTTP requests and also supports multiple platforms such as browsers and Node.js. The specific sample code is as follows:

import axios from 'axios';
export default {
  data() {
    return {
      books: [],
    }
  },
  mounted: function () {
    var vm = this;
    axios.get('/api/v1/books')
      .then(function (response) {
        vm.books = response.data;
      })
      .catch(function (error) {
        console.log(error);
      });
  },
}

In the above code, we imported the axios library through import in the component, and then used the axios.get method in the mounted life cycle function to obtain the data of the /books interface from the server side. And load it into the component's books array.

Similar to the $http library, the axios library also supports a variety of request parameters. You can refer to the official documentation of axios for configuration and use.

Conclusion

Through the above introduction, we can see that using Ajax technology to make interface calls in Vue is very simple, and it can also improve the performance and user experience of web applications. In actual development, we can choose to use libraries such as $http or axios, and choose according to the actual needs of the project.

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