js中的map遍历

const map = new Map([['a', 1], ['b', 2], ['c', 3]]);
for (const [key, value] of map) {
console.log(key, value);
}

map.forEach((value, key) => {
console.log(key, value);
});

const iterator = map.entries();
let result = iterator.next();
while (!result.done) {
console.log(result.value[0], result.value[1]);
result = iterator.next();
}

// 创建一个Map实例
const myMap = new Map();

// 添加键值对
myMap.set('name', 'Alice');
myMap.set('age', 25);
myMap.set('city', 'New York');

// 使用for...of循环遍历Map
console.log('使用for...of循环遍历:');
for (const [key, value] of myMap) {
console.log(`${key}: ${value}`);
}

// 使用forEach方法遍历Map
console.log('使用forEach方法遍历:');
myMap.forEach((value, key) => {
console.log(`${key}: ${value}`);
});