js中map转换成json

// 创建一个Map实例
let myMap = new Map();
myMap.set('key1', 'value1');
myMap.set('key2', 'value2');

// 将Map转换为对象
let mapToObject = {};
for (let [key, value] of myMap) {
    mapToObject[key] = value;
}

// 将对象转换为JSON字符串
let jsonString = JSON.stringify(mapToObject);

console.log(jsonString); // 输出: {"key1":"value1","key2":"value2"}

// 将Map转换为数组
let mapToArray = Array.from(myMap, ([key, value]) => ({ key, value }));

// 将数组转换为JSON字符串
let jsonStringFromArray = JSON.stringify(mapToArray);

console.log(jsonStringFromArray); // 输出: [{"key":"key1","value":"value1"},{"key":"key2","value":"value2"}]

function replacer(key, value) {
    if (typeof value === 'function') {
        return undefined; // 忽略函数
    }
    return value;
}

let jsonStringWithReplacer = JSON.stringify(mapToObject, replacer);