js 对象转换方法

const obj = { name: "Alice", age: 25 };
const jsonString = JSON.stringify(obj);
console.log(jsonString); // 输出: '{"name":"Alice","age":25}'

const jsonString = '{"name":"Alice","age":25}';
const obj = JSON.parse(jsonString);
console.log(obj); // 输出: { name: 'Alice', age: 25 }

const obj = { name: "Alice", age: 25 };
const entries = Object.entries(obj);
console.log(entries); // 输出: [ [ 'name', 'Alice' ], [ 'age', 25 ] ]

const entries = [ [ 'name', 'Alice' ], [ 'age', 25 ] ];
const obj = Object.fromEntries(entries);
console.log(obj); // 输出: { name: 'Alice', age: 25 }

const CircularJSON = require('circular-json');
const obj = {};
obj.self = obj;
const jsonString = CircularJSON.stringify(obj);
console.log(jsonString); // 输出包含循环引用的JSON字符串

function stringifyWithFunctions(obj) {
    return JSON.stringify(obj, (key, value) => {
        if (typeof value === 'function') {
            return { __type: 'function', value: value.toString() };
        }
        return value;
    });
}

const obj = { name: "Alice", greet: function() { return "Hello"; } };
const jsonString = stringifyWithFunctions(obj);
console.log(jsonString); // 输出包含函数信息的JSON字符串