js中json数据封装用法

let obj = {
    name: "张三",
    age: 30,
    isStudent: false,
    courses: ["数学", "英语"],
    address: {
        city: "北京",
        street: "朝阳路"
    }
};

let jsonString = JSON.stringify(obj);
console.log(jsonString);
// 输出: {"name":"张三","age":30,"isStudent":false,"courses":["数学","英语"],"address":{"city":"北京","street":"朝阳路"}}

let jsonString = '{"name":"李四","age":25,"isStudent":true,"courses":["物理","化学"],"address":{"city":"上海","street":"浦东大道"}}';

let obj = JSON.parse(jsonString);
console.log(obj.name); // 输出: 李四
console.log(obj.courses[0]); // 输出: 物理

const CircularJSON = require('circular-json');
let circularObj = {};
circularObj.self = circularObj;
let jsonString = CircularJSON.stringify(circularObj);

let jsonString = '{name:"张三",}'; // 非法JSON字符串
try {
    let obj = JSON.parse(jsonString);
} catch (e) {
    console.error("解析JSON失败:", e);
}