React: scrollIntoView not working following by dependency of useEffect - reactjs

Question

I have got a dependency imageNo in useEffect() as I want the element to go up when it's being hidden, but scrollIntoView() does not work properly whenever imageNo changes, but it works when clicking a button.
Updated
import React, { useEffect, useRef, useState } from 'react';
const Product = ({ product }) => {
const moveRef = useRef(product.galleryImages.edges.map(() => React.createRef()));
const [imageNo, setImageNo] = useState(0);
useEffect(() => {
const position = moveRef.current[imageNo]?.current.getBoundingClientRect().y;
console.log('imageNo', imageNo); // <<<<----- This is also called whenever scrolling excutes.
if (position > 560) {
moveRef.current[imageNo]?.current.scrollIntoView({
behavior: 'smooth',
block: 'center',
});
}
}, [imageNo]);
const test = () => {
const position = moveRef.current[imageNo]?.current.getBoundingClientRect().y;
if (position > 560) {
moveRef.current[imageNo]?.current.scrollIntoView({
behavior: 'smooth',
block: 'center',
});
}
};
// This changes `imageNo`
const handleScroll = () => {
let id = 0;
console.log('refs.current[id]?.current?.getBoundingClientRect().y', refs.current[id]?.current?.getBoundingClientRect().y);
const temp = imgArr?.find((el, id) => refs.current[id]?.current?.getBoundingClientRect().y >= 78);
if (!temp) id = 0;
else id = temp.id;
if (refs.current[id]?.current?.getBoundingClientRect().y >= 78) {
setImageNo(id);
}
};
useEffect(() => {
window.addEventListener('scroll', handleScroll);
return () => {
window.removeEventListener('scroll', handleScroll);
};
}, []);
return (
<div className="flex flex-row layout-width ">
{/* aside */}
<div className="sticky flex self-start top-[76px] overflow-y-auto !min-w-[110px] max-h-[90vh]">
<div className="">
{product.galleryImages.edges.map((image, i) => {
return (
<div ref={moveRef.current[i]} key={image.node.id}>
<Image />
</div>
);
})}
</div>
</div>
<button onClick={test}>btn</button>
</div>
);
};
export default Product;
Any suggestion will be greatly appreciated.

Answer 1

I couldn't see where the imageNo is coming from?
If it is just a normal javascript variable then it wouldn't trigger re-render even after putting it inside the useEffect's dependencies array.
If you want to make the re-render happen based on imageNo then make a useState variable for imageNo and change it using setter function that useState provides.
Helpful note - read about useState and useEffect hooks in React.