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Home > List of blog posts > 实例演示fetch api, async,await的使用 & npm 安装与删除包的常用操作 & node中的模块声明,导出与导入
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实例演示fetch api, async,await的使用 & npm 安装与删除包的常用操作 & node中的模块声明,导出与导入
Blackeye
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  1. <!DOCTYPE html>
  2. <html lang="en">
  3.   <head>
  4.     <meta charset="UTF-8" />
  5.     <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  6.     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  7.     <title>Document</title>
  8.   </head>
  9.   <body>
  10.     <button onclick="getData()">fecth</button>
  11.     <button onclick="getDataOne()">await</button>
  12.   </body>
  13.   <script>
  14.     //1. 实例演示fetch api, async,await的使用
  15.     function getData() {
  16.       fetch("http://xhr411.edu/users.php")
  17.         .then((response) => response.json())
  18.         .then((json) => console.log(json));
  19.     }
  20.     const url = "http://xhr411.edu/users.php";
  21.     async function getDataOne(){
  22.         const response = await fetch(url);
  23.         const result = await response.json();
  24.         console.log(result);
  25.     }
  26.   </script>
  27. </html>

npm 安装与删除包的常用操作

  1. npm i/install xxx       生产环境包xxx
  2. npm i/install -D xxx    开发环境包xxx
  3. npm i/install -g xxx    全局生产环境包xxx
  4. npm uni/unistall xxx    卸载包xxx
  1.     //3. node中的模块声明,导出与导入
  2.     // 1. 核心模块
  3.     const http = require('http');
  4.     console.log(http);
  6.     // 2. 文件模块
  7.     const demo = require('./demo.js');
  8.     console.log(demo.getuser());
  1. let user = "php.cn";
  2. function getuser(){
  3.     return this.user;
  4. }
  6. exports.user = user;
  7. exports.getuser = getuser;
Correcting teacher：PHPzPHPz

Correction status：qualified

Teacher's comments：
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