In React, both useEffect and useMemo have a dependencies argument. I naively thought they worked identically: whenever the values in that dependencies argument changed, I thought the useEffect or useMemo callback would be run, and that the only difference was…
Ok, I am trying to create a dropdown and when selecting an item, the page should scroll to a specific section (ref). I have several divs with the same ref (as I have more than 30 divs that require a…
I have these components and I have 12 checkboxes in child component. I want to have them checked by default when the component loads. I can't do that. I can't use checked='true' as an attribute for my input because formik…
Say I have a component that should wrap a child component and use an IntersectionObserver to monitor when the child appears on screen, and then fade it in. I could implement something like this: function FadeIn(props: PropsWithChildren) { const ref…
I have Parent component where I define some refs. Then I create an object of all these refs. And then pass this object to ref of child component. Parent component is just a page component, child components are sections on…
I'm trying to create a component that allows for the user to click outside it. To do this I need to create a ref for each component that requires the functionality. This is what I'm trying to type for. I'm…
i'am trying to implement à modal with React, in this modal i want to position the modal relatively to the the element wich trigger it (which is not à parent), in this set up i can access the the reference…
I have an array of react elements that I output using the map function: { elemsList.map((item, i) => { return ( <div key={i} ref={refsArr[i]} data-grid={item.props["data-grid"]} onClick={e => doubleClickHandler(item.key, e)} style={{ backgroundColor: i === selectedComponent ? '#828EE3' : "#102f6a", color: "#fff",…
I have the following code that uses multiple useRef() hooks and a switch statement to scroll to a specific ref based on an index value: const ref0 = useRef(); const ref1 = useRef(); const ref2 = useRef(); const ref3 =…
My Code : https://codesandbox.io/s/quirky-wescoff-44n2by?file=/src/App.js When I hover over any element, always the last element of array is printed in console. I tried using ref, not sure if I am doing it right. I expected on hover over any element that…