react-icons/ai#AiOutlineArrowUp JavaScript Examples

The following examples show how to use react-icons/ai#AiOutlineArrowUp. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: ScrollToTopButton.jsx    From doc2pen with Creative Commons Zero v1.0 Universal 5 votes vote down vote up 
ScrollToTop = () => {
	let toTopButtonObj = useRef(null);
	const [buttonState, changeButtonState] = useState({
		visible: false,
		lastHeight: 0,
	});
	useEffect(() => {
		scrollFunction();
	});
	window.onscroll = () => {
		scrollFunction();
	};

	function scrollFunction() {
		if (
			document.body.scrollTop > 50 ||
			document.documentElement.scrollTop > 50
		) {
			if (!buttonState.visible) {
				changeButtonState({
					visible: true,
					lastHeight: document.body.scrollTop,
				});
			}
		} else {
			if (buttonState.visible) {
				changeButtonState({
					visible: false,
					lastHeight: document.body.scrollTop,
				});
			}
		}
	}

	function topFunction() {
		document.body.scrollTop = 0;
		document.documentElement.scrollTop = 0;
	}

	const button = buttonState.visible ? (
		<Button
			ref={toTopButtonObj}
			className={styles.toTopButton}
			variant="light"
			onClick={() => topFunction()}
			aria-label="Scroll to Top"
		>
			<AiOutlineArrowUp />
		</Button>
	) : null;

	return button;
}