Intersection observer API
June 25, 2022
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// Create a new observer object and pass in the entires/targeted DOM element(s)
this.observer = new IntersectionObserver((entries) => {
// Loop through teh entries, if an entry has intersected the viewport add a class
entries.forEach((entry) => {
if (entry.isIntersecting) {
entry.target.classList.add("entered")
// Once the class is added we no longer need to observe the element
this.observer.unobserve(entry.target)
}
})
})
// The entry/DOM element to be targeted
document.querySelectorAll(".fade-on-scroll").forEach((el) => {
this.observer.observe(el)
})
// Create a new observer object and pass in the entires/targeted DOM element(s)
this.observer = new IntersectionObserver((entries) => {
// Loop through teh entries, if an entry has intersected the viewport add a class
entries.forEach((entry) => {
if (entry.isIntersecting) {
entry.target.classList.add("slide-entered")
// Once the class is added we no longer need to observe the element
this.observer.unobserve(entry.target)
}
})
})
// The entry/DOM element to be targeted
document.querySelectorAll(".slide-on-scroll").forEach((el) => {
this.observer.observe(el)
})