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Forked from jjmu15/in_viewport.js
Created August 27, 2020 13:48
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check if element is in viewport - vanilla JS. Use by adding a “scroll” event listener to the window and then calling isInViewport().
// Determine if an element is in the visible viewport
function isInViewport(element) {
var rect = element.getBoundingClientRect();
var html = document.documentElement;
return (
rect.top >= 0 &&
rect.left >= 0 &&
rect.bottom <= (window.innerHeight || html.clientHeight) &&
rect.right <= (window.innerWidth || html.clientWidth)
);
}
The above function could be used by adding a “scroll” event listener to the window and then calling isInViewport().
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