Pointerdown Event with Passive Option for Optimized Scrolling

The 'pointerdown' event is a type of pointer event that is fired when the pointer device (such as a mouse or touch screen) is pressed down on an element.

Adding the 'passive' option to the 'addEventListener' method for the 'pointerdown' event allows the browser to optimize scrolling performance. When an event listener is marked as 'passive', it means that the listener will not make any changes to the page's scroll position, and the browser can safely perform scrolling operations without waiting for the listener to finish.

Here's an example of how to use the 'pointerdown' event with the 'passive' option:

element.addEventListener('pointerdown', myFunction, { passive: true });

In this example, 'element' is the element you want to listen for 'pointerdown' events on, 'myFunction' is the function that will be called when the event is triggered, and '{ passive: true }' is an options object that includes the 'passive' property set to 'true'.