JSFiddle - React, Tailwind, and code Playground

by Jens Kühn

JavaScript

const myKey = { name: 'John' };

const myWeakMap = new WeakMap([
  [myKey, 'John Doe'],
  [{ name: 'Jane' }, 'Jane Doe'],
]);
myWeakMap.set({ name: 'Bob' }, 'Bob Doe');

const name = myWeakMap.get(myKey);
console.log(name); // 'John Doe'ja