Javascript Map Object with multiple keys to one value-CodePudding

Is it possible to have multiple keys giving the same result in a JS Map, without having to write all of them ?

For example:

const mp = new Map<number, string>([
      [2 || 4, 'even'],
      [1 || 3, 'odd']
    ]);

This does not work but I am looking for something similar to avoid a switch case which is very verbose

CodePudding user response：

Is it possible to have multiple keys giving the same result in a JS Map, without having to write all of them ?

No. A map is a 1:1 connection between a key and a value. If you want two different keys to have the same value, that means you need to create two entries in the map.

CodePudding user response：

Yes, it is possible. You just have to set the value twice for each key. The constraint to be unique is applicable only on keys.

const map = new Map()
map.set(1, 'odd');
map.set(3, 'odd');