IntersectionObserver
var options = {
root: document.querySelector('#scrollArea'),
rootMargin: '0px',
threshold: 1.0
}
var observer = new IntersectionObserver(callback, options);IntersectionObserver
var options = {
root: document.querySelector('#scrollArea'),
rootMargin: '0px',
threshold: 1.0
}
var observer = new IntersectionObserver(callback, options);intersection observer example
const images = document.querySelectorAll('.lazyload');
function handleIntersection(entries) {
entries.map((entry) => {
if (entry.isIntersecting) {
entry.target.src = entry.target.dataset.src;
entry.target.classList.add('loaded')
observer.unobserve(entry.target);
}
});
}
const observer = new IntersectionObserver(handleIntersection);
images.forEach(image => observer.observe(image));intersection Observer
const numSteps = 20.0;
let boxElement;
let prevRatio = 0.0;
let increasingColor = "rgba(40, 40, 190, ratio)";
let decreasingColor = "rgba(190, 40, 40, ratio)";
// Set things up
window.addEventListener("load", (event) => {
boxElement = document.querySelector("#box");
createObserver();
}, false);Copyright © 2021 Codeinu
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