Function triggerIfInViewport

docs/source/_custom_js/src/index.js:80–94

(element, callback)

}

function triggerIfInViewport(element, callback) {
  const observer = new window.IntersectionObserver(
    ([entry]) => {
      if (entry.isIntersecting) {
        callback();
      }
    },
    {
      root: null,
      threshold: 0.1, // set offset 0.1 means trigger if at least 10% of element in viewport
    },
  );

  observer.observe(element);
}