What are some practical examples of using WeakSet in JavaScript?

Can you give me some practical examples of using WeakSet in JavaScript?

Sure! A WeakSet is a collection of objects, where each object is held weakly, meaning they can be garbage collected if there are no other references to them. One practical example is tracking active DOM elements.

How does WeakSet help with memory management?

WeakSet helps with memory management by allowing objects to be garbage collected when they are no longer needed, preventing memory leaks.

Can you show me a code snippet using WeakSet?

Absolutely! Here's a simple example:

let weakset = new WeakSet();
let obj = {};
weakset.add(obj);
console.log(weakset.has(obj)); // true
obj = null; // Now the object can be garbage collected