JavaScript Getting a value associated to the key


Example

To get a value associated to the key, use the .get() method. If there's no value associated to the key, it returns undefined.

const obj1 = {},
      obj2 = {};

const weakmap = new WeakMap([[obj1, 7]]);
console.log(weakmap.get(obj1)); // 7
console.log(weakmap.get(obj2)); // undefined