GarbageCollection (GC03)

   1:  const element = document.getElementById('myElement');

   2:  const clickHandlers = new WeakMap(); // Use a WeakMap to store event handler

   3:  const handleClick = () => {

   4:      console.log('Element clicked!');

   5:  };

   6:  clickHandlers.set(element, handleClick); // Store the handler in the WeakMap, using the element as a weak key

   7:  element.addEventListener('click', clickHandlers.get(element));

Weak References (WeakMap)
WeakMap will automatically remove handleClick entry after element will be removed from DOM and garbage collected

// ... (the element might be removed from the DOM at some point) ...
// Now, when the element is garbage collected, the WeakMap doesn't prevent it. The entry will be removed automatically

// ... later, when the element is no longer needed, the click handler will be garbage collected automatically

GarbageCollection context:

ES6 context:

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