const map1 = new Map([[1, 1],[2, 2],[3, 3],]);
console.log("Map数据类型====>", map1);

const map2 = new Map({[Symbol.iterator]: function* () {yield* [[1, 1],[2, 2],[3, 3],];},});console.log("Map数据类型====>", map2);

  const emptyMap = new Map();console.log("emptyMap====>", emptyMap);emptyMap.set('name', 'shang')console.log("set结果====>", emptyMap);

 emptyMap.set("gender", "male").set("age", 17);console.log("set结果====>", emptyMap);

console.log('get方法====>', emptyMap.get('name')

 console.log('has方法====>', emptyMap.has('name'))

emptyMap.delete('name')
console.log("delete结果====>", emptyMap);

 emptyMap.clear()console.log("emptyMap的size====>", emptyMap.size);

 const functionKey = function() {};const symbolKey = Symbol()const objectKey = new Object()emptyMap.set(functionKey, functionKey).set(symbolKey, symbolKey).set(objectKey, objectKey)console.log('各种特殊键值对===>', emptyMap)

const emptyArr = [];
const emptyObj = {};
emptyMap.set(emptyArr, emptyObj);
emptyArr.push("1");
emptyObj.name = "shang";
console.log("复杂类型特殊键值对===>", emptyMap);
console.log("复杂类型特殊值===>", emptyMap.get(emptyArr));

console.log('Map数据类型默认迭代器', emptyMap.entries === emptyMap[Symbol.iterator])

for (const [key, value] of emptyMap) {console.log("forof映射元素分别为===>", key, value);
}

console.log("拓展运算符用于Map数据类型", [...emptyMap]);

emptyMap.forEach((value, key) => {console.log("forEach映射元素分别为===>", key, value);
});

// Map使用values & keys 返回映射的迭代器
const keysIterator = emptyMap.keys();
console.log("Map的keys的迭代器===>", keysIterator);
for (const iterator of keysIterator) {console.log("keysIterator===>", iterator);
}

const valuesIterator = emptyMap.values();
console.log("Map的values的迭代器===>", valuesIterator);
for (const iterator of valuesIterator) {console.log("valuesIterator===>", iterator);
}