如何从地图对象中删除带有对象键的对象？

Question

how to delete an object with an object key from a map object?

for example if i created a map object called members

const members = new Map();

here's the normal way for adding a new object inside members

//members.set(key, value);
members.set('Evelyn',{name: 'Evelyn', age: 25});
//here's how can we delete this object 
members.delete('Evelyn');

but when i started reading about map objects in es6 i was confused that the keys can be an object too!!

Map is an object that lets you store key-value pairs where both the keys and the values can be objects

if so how can i delete the one with the object key ?

//key as an object
members.set({id: 1}, {
 name: 'Evelyn',
 age: 30
});

Answer 1

You need eiter the same object reference of the key or seach with some infomation of the object.

 var members = new Map, id = 1, key; members.set({ id: 1 }, { name: 'Evelyn', age: 30 }); console.log([...members]); // one element for (key of members.keys()) if (key.id === id) members.delete(key); console.log([...members]); // [] 

 .as-console-wrapper { max-height: 100% !important; top: 0; } 

Answer 2

let objectKey = {id: 1};
members.set(objectKey, {
 name: 'Evelyn',
 age: 30
});

members.delete(objectKey);

As of my knowledge Maps compare via reference so this would be the only way.