Community Learn Tools Library Leisure
search
English
Home > List of blog posts > 【JS】fetch常用案例：参考模板
Blogger Information
Blog 94
fans 0
comment 0
visits 92760
Special Recommendation
More>
Related recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
【JS】fetch常用案例：参考模板
可乐随笔
Original
1487 people have browsed it

fetch常用案例：参考模板

HTML示范代码：

  2. <!DOCTYPE html>
  3. <html lang="zh-CN">
  4.   <head>
  5.     <meta charset="UTF-8" />
  6.     <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  7.     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  8.     <title>fetch</title>
  9.   </head>
  10.   <body>
  11.     <div style="display: inline-grid; gap: 1em">
  12.       <button onclick="getHtml(this)">GET-HTML</button>
  13.       <button onclick="getJSON(this)">GET-JSON</button>
  14.       <button onclick="postJSON(this)">POST-JSON</button>
  15.     </div>
  16.     <script>
  17.       // fetch: 发起http请求,返回 Promise对象,该对象会在请求响应被resolve,返回Response
  18.       //
  20.       // GET:HTML
  21.       const getHtml = async function (btn) {
  22.         // 响应对象
  23.         const response = await fetch('http://site.io/test1.php', {
  24.           method: 'GET',
  25.         });
  27.         // 处理数据
  28.         const data = await response.text();
  29.         console.log(data);
  31.         // 将html字符串,解析/包装成DOM元素对象
  32.         let domparser = new DOMParser();
  33.         let doc = domparser.parseFromString(data, 'text/html');
  34.         // 将data,解析成了一个完整的html文档对象
  35.         console.log(doc);
  36.         let ele = doc.body.firstElementChild;
  37.         console.log(ele);
  38.         // 将ul添加到页面中
  39.         if (btn.nextElementSibling.tagName !== 'UL') {
  40.           btn.after(ele);
  41.         } else {
  42.           btn.nextElementSibling.remove();
  43.         }
  44.       };
  46.       // GET:JSON
  47.       const getJSON = async function (btn) {
  48.         // 响应对象
  49.         const response = await fetch('http://site.io/test2.php', {
  50.           method: 'GET',
  51.         });
  53.         // 处理数据
  54.         const data = await response.json();
  55.         console.log(data);
  57.         // 用表格将数据渲染到页面中
  58.         const table = document.createElement('table');
  59.         table.border = 1;
  60.         const caption = table.createCaption();
  61.         caption.textContent = '购物车';
  62.         const thead = table.createTHead();
  63.         thead.innerHTML = '<tr><td>ID</td><td>品名</td><td>单价</td></tr>';
  64.         const tbody = table.createTBody();
  65.         data.forEach((item) => {
  66.           const tr = `
  67.                 <tr>
  68.                     <td>${item.id}</td>
  69.                     <td>${item.name}</td>
  70.                     <td>${item.price}</td>
  71.                 </tr>
  72.             `;
  73.           tbody.innerHTML += tr;
  74.         });
  76.         // 将ul添加到页面中
  77.         if (btn.nextElementSibling.tagName !== 'TABLE') {
  78.           btn.after(table);
  79.         } else {
  80.           btn.nextElementSibling.remove();
  81.         }
  82.       };
  84.       // POST: JSON(参考模板)
  85.       const postJSON = async function (btn) {
  86.         const response = await fetch('api', {
  87.           // 请求类型
  88.           method: 'POST',
  89.           // 跨域
  90.           mode: 'cors',
  91.           // 请求头
  92.           headers: {
  93.             // 内容类型
  94.             'Content-Type': 'application/json;charset=utf-8',
  95.           },
  96.           // 将数据解析为JSON字符串发送
  97.           body: JSON.stringify({ id: 4, name: '面包', price: 50 }),
  98.         });
  100.         //
  101.         const data = await response.text();
  102.         console.log(data);
  103.       };
  104.     </script>
  105.   </body>
  106. </html>

PHP接口代码示范：

test1.php

  1. <?php
  3. header("access-control-allow-origin: *");
  5. ?>
  7. <ul>
  8.     <li><a href="">item1</a></li>
  9.     <li><a href="">item2</a></li>
  10.     <li><a href="">item3</a></li>
  11. </ul>

test2.php

  1. <?php
  3. // 允许跨域
  4. header("access-control-allow-origin: *");
  7. $data = [
  8.   ['id'=>1,'name'=>'西瓜', 'price'=>20],
  9.   ['id'=>2,'name'=>'蛋糕', 'price'=>100],
  10.   ['id'=>3,'name'=>'大馍', 'price'=>10],
  11. ];
  13. echo json_encode($data);
Statement of this Website
The copyright of this blog article belongs to the blogger. Please specify the address when reprinting! If there is any infringement or violation of the law, please contact admin@php.cn Report processing!
All comments Speak rationally on civilized internet, please comply with News Comment Service Agreement
0 comments
Author's latest blog post