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File size: 2,476 Bytes
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const container = document.getElementById("carousel-container");
const elements = container.querySelectorAll(".testimonial-card");
const endicators = document.querySelectorAll(".endicator");
const options = {
root: container,
rootMargin: "0px",
threshold: 1,
};
// From specs, there's only ever gonna be one card fully visible at a time
let visibleCardNum = -1;
const observer = new IntersectionObserver((entries) => {
entries.forEach((entry) => {
if (entry.isIntersecting) {
visibleCardNum = Number(entry.target.id.split("-")[2]);
}
});
}, options);
const boundsObserver = new IntersectionObserver((entries) => {
entries.forEach((entry) => {
const bound = entry.target.dataset.bound;
if (entry.isIntersecting) {
if (bound === "left") {
document.getElementById("slideLeft").disabled = true;
}
if (bound === "right") {
document.getElementById("slideRight").disabled = true;
}
} else {
if (bound === "left") {
document.getElementById("slideLeft").disabled = false;
}
if (bound === "right") {
document.getElementById("slideRight").disabled = false;
}
}
});
}, options);
endicators.forEach((element) => boundsObserver.observe(element));
elements.forEach((element) => {
observer.observe(element);
});
function updateButtonState() {
if (container.scrollLeft <= 0) {
document.getElementById("slideLeft").disabled = true;
} else {
document.getElementById("slideLeft").disabled = false;
}
if (container.scrollLeft >= container.scrollWidth - container.clientWidth) {
document.getElementById("slideRight").disabled = true;
} else {
document.getElementById("slideRight").disabled = false;
}
}
document.getElementById("slideRight").addEventListener("click", function () {
const scrollTo = document.getElementById(
`testimonial-card-${visibleCardNum + 1}`
);
if (scrollTo) {
const x = container.scrollLeft + scrollTo.offsetLeft - container.offsetLeft;
container.scrollBy({ left: x, behavior: "smooth" });
// updateButtonState();
}
});
document.getElementById("slideLeft").addEventListener("click", function () {
const scrollTo = document.getElementById(
`testimonial-card-${visibleCardNum - 1}`
);
if (scrollTo) {
const x = container.scrollLeft - scrollTo.offsetLeft + container.offsetLeft;
container.scrollBy({ left: -x, behavior: "smooth" });
// updateButtonState();
}
});
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