JSON 行 Mime 类型

JSON（JavaScript Object Notation）是一种轻量级的数据交换格式，常用于前后端数据传输。它以易于阅读和编写的方式组织数据，逐渐成为互联网应用中常用的数据格式之一。

javascript
{
  "name": "John",
  "age": 30,
  "isStudent": false,
  "hobbies": ["reading", "coding", "traveling"],
  "address": {
    "city": "New York",
    "country": "USA"
  }
}

javascript
// 后端代码（Node.js）
const http = require('http');
http.createServer((req, res) => {
  const data = {
    "name": "John",
    "age": 30,
    "isStudent": false,
    "hobbies": ["reading", "coding", "traveling"],
    "address": {
      "city": "New York",
      "country": "USA"
    }
  };
  res.writeHead(200, { "Content-Type": "application/json" });
  res.end(JSON.stringify(data));
}).listen(3000);
console.log('Server running at http://localhost:3000/');
// 前端代码（JavaScript）
fetch('http://localhost:3000/')
  .then(response => response.json())
  .then(data => {
    console.log(data.name);
    console.log(data.age);
    console.log(data.hobbies);
  })
  .catch(error => console.error(error));