Detecting Scroll Event - user is or is not scrolling

I’m trying to have a little Halloween fun, and I’m not up to speed yet on Wix’s api. I’m trying to add an event listener for scrolling.

I want to toggle a video from play to pause based on if the user is scrolling or not. If scrolling, play, if not pause.

The issue I am facing at the moment, is that the scrollY value is not updating. It’s reading the value once, and never changing. So, I haven’t even gotten to the logic yet.. anyone familiar with this?

Here’s what I have atm:

import wixWindowFrontend from "wix-window-frontend";

wixWindowFrontend.getBoundingRect().then((windowSizeInfo) => {

setInterval(() => {
	//let windowHeight = windowSizeInfo.window.height;
	//let documentHeight = windowSizeInfo.document.height;
	let scrollY = windowSizeInfo.scroll.y; // offset from top left
	console.log("position: " + scrollY);
  }, 100); 
  // conditional logic goes here
});
});

Okay, I’ll answer my own question here. haha I guess I panicked, but I spent about another hour with it. My original issue, was that I was calling getBoundingRect() outside of the interval function. Then I struggled to get the logic right for a bit, but! Here is the solution:

import wixWindowFrontend from "wix-window-frontend";

var scrollY;
var lastPosition;

setInterval(() => {
	wixWindowFrontend.getBoundingRect().then((windowSizeInfo) => {
	scrollY = windowSizeInfo.scroll.y;
	//console.log("position: " + scrollY);
});
	if(scrollY !== lastPosition) {
		console.log("scrolling");
		//scrolling action here
		lastPosition = scrollY;
	} else {
		console.log("stopped");
		//stopped action here
	}
}, 100);

It works in either direction of y (vertical). You could change it to scroll.x to get horizontal values.

Always worth searching on the forum first…
Might have saved you an hour worth of brainstorming :upside_down_face:

But again, no better way to learn how to code trying things out yourself.
Glad you got it working! (:

haha I spent about 30 minutes searching. I don’t know why that didn’t come up. I guess it’s not titled appropriately…

If anybody wants to tackle detecting which way the scroll is going (up or down), I’m going to work on that next…