JavaScript Map-设置嵌套属性

Question

I have this Map

let map = new Map(Object.entries({
   a: 1,
   b: {
        c: 2,
        method() {console.log('test')}
      }
   }
));

Now, I want to change map.b.method. How can I achieve that?

Answer 1

It's just an object stored inside the map. Get a reference to it and modify it as you'd like.

 let map = new Map(Object.entries({ a: 1, b: { c: 2, method() { console.log('test') } } })); map.set('b', { ...map.get('b'), method: function() { console.log('It works ;)'); } }); map.get('b').method();