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npm 安装与删除包的常用操作及 node中的模块声明,导出与导入

发布于：2022-04-24 11:07:19  栏目：技术文档

  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.                 <script src="https://unpkg.com/vue@next"></script>
  9.                 <style>
  10.                     button{
  11.                         background-color: red;
  12.                         font-size: 32px;
  13.                         color: rgb(245, 241, 241);
  14.                     }
  15.                 </style>
  16.             </head>
  17.             <body>
  18.                 <button onclick="getData()">fecth</button>
  19.                 <button onclick="getDataOne()">await</button>
  20.                 <script>
  21.                     //1. 实例演示fetch api, async,await的使用
  22.                     function getData() {
  23.                       fetch("http://xhr411.edu/users.php")
  24.                         .then((response) => response.json())
  25.                         .then((json) => console.log(json));
  26.                     }
  27.                     const url = "http://xhr411.edu/users.php";
  28.                     async function getDataOne(){
  29.                         const response = await fetch(url);
  30.                         const result = await response.json();
  31.                         console.log(result);
  32.                     }
  33.                   </script>
  34.             </body>
  35.             </html>

node中的模块声明,导出与导入

  1.     // 1. 核心模块
  2.     const http = require('http');
  3.     console.log(http);
  4.     // 2. 文件模块
  5.     const demo = require('./demo.js');
  6.     console.log(demo.getuser())
  8. let user = "php.cn";
  9. function getuser(){
  10.     return this.user;
  11. }
  12. exports.user = user;
  13. exports.getuser = getuser;
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