What is the output of the following? “`js const map = new Map(); const key = {}; map.set(key, ‘value’); console.log(map.get({})); console.log(map.get(key)); “`

Question

JavaScript Developer — Hard

What is the output of the following? “`js const map = new Map(); const key = {}; map.set(key, ‘value’); console.log(map.get({})); console.log(map.get(key)); “`

Accepted Answer

The output of the first `console.log(map.get({}));` is `undefined` because a new object is created, which is different from the `key` object used to set the value. The output of the second `console.log(map.get(key));` is `'value'` because the `key` object is used to retrieve the value.