funda-ui/lib/esm/Utils/libs/viewport.ts

React components using pure Bootstrap 5+ which does not contain any external style and script libraries.

/**
 * Check if an element is in the viewport
 * @param {HTMLElement} elem 
 * @returns {Boolean}
 */
function isInViewport(elem: HTMLElement) {
    const bounding = elem.getBoundingClientRect();
    return (
        bounding.top >= 0 &&
        bounding.left >= 0 &&
        bounding.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
        bounding.right <= (window.innerWidth || document.documentElement.clientWidth)
    );
}

    
export {
    isInViewport
}