javascript - How to update a value of a existing key in WeakMap?

Question

I can't find any example on MDN. I came up with this,

const simpleMap = new WeakMap()

const simpleObject = {};

simpleMap.set(simpleObject, "A Value");

if(simpleMap.has(simpleObject)) {
  simpleMap.set(simpleObject, "A New Value");
 }

question from:https://stackoverflow.com/questions/66052782/how-to-update-a-value-of-a-existing-key-in-weakmap

Answer 1

You could update directly.

const simpleMap = new WeakMap()

const simpleObject = {};

simpleMap.set(simpleObject, "A Value");

if (simpleMap.has(simpleObject)) {
    simpleMap.set(simpleObject, "A New Value");
}

console.log(simpleMap.get(simpleObject));