andreich-tut
/ in_viewport.js
Created
February 19, 2018 18:23
— forked from jjmu15/in_viewport.js
check if element is in viewport - vanilla JS. Use by adding a “scroll” event listener to the window and then calling isInViewport().
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| // 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) | |
| ); |