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script.js
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script.js
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const imageContainer = document.getElementById("image-container");
const loader = document.getElementById("loader");
let ready = false;
let imagesLoaded = 0;
let totalImages = 0;
let photosArray = [];
let isInitialLoad = true;
// ==> UNSPLASH API <==
const count = 30;
const apiKey = "AzUg3H_TaRCEoEFia2iFX8dNGE0W8XlnNcoojCehX3g";
const apiUrl = `https://api.unsplash.com/photos/random/?client_id=${apiKey}&count=${count}`;
// ==> SET FINAL COUNT NUMBER FOR ALL PICS <==
function updateAPIURLWithNewCount(picCount) {
apiUrl = `https://api.unsplash.com/photos/random?client_id=${apiKey}&count=${picCount}`;
}
// ==> CHECK IF ALL IMAGES WERE LOADED <==
function imageLoaded() {
console.log("loaded");
imagesLoaded++;
if (imagesLoaded === totalImages) {
ready = true;
loader.hidden = true;
}
}
// ==> HELPER FUNCTION TO SET ATTRIBUTES ON DOM ELEMENTS <==
function setAttributes(element, attributes) {
for (const key in attributes) {
element.setAttribute(key, attributes[key]);
}
}
// ==> CREATE ELEMENTS FOR LINKS & PHOTOS, ADD TO DOM <==
function displayPhotos() {
imagesLoaded = 0;
totalImages = photosArray.length;
// ==> Run function for each object in photosArray <==
photosArray.forEach(photo => {
// ==> Create <a> to link to unsplash <==
const item = document.createElement("a");
setAttributes(item, {
href: photo.links.html,
target: "_blank",
});
// ==> Create <img> for photo <==
const img = document.createElement("img");
setAttributes(img, {
src: photo.urls.regular,
alt: photo.alt_description,
title: photo.alt_description,
});
// ==> Event Listener, check when each is finished loading <==
img.addEventListener("load", imageLoaded);
// ==> Put <img> inside <a>, then put both inside imageContainer element <==
item.appendChild(img);
imageContainer.appendChild(item);
});
}
// ==> GET PHOTOS FROM UNSPLASH API <==
async function getPhotosFromUnsplash() {
try {
const response = await fetch(apiUrl);
photosArray = await response.json();
displayPhotos();
if (isInitialLoad) {
updateAPIURLWithNewCount(30);
isInitialLoad = false;
}
} catch (error) {
console.log(error);
}
}
// ==> CHECK TO SEE IF SCROLLING NEAR BOTTOM OF PAGE, LOAD MORE PHOTOS <==
window.addEventListener("scroll", () => {
if (
window.innerHeight + window.scrollY >= document.body.offsetHeight - 1000 &&
ready
) {
ready = false;
getPhotosFromUnsplash();
}
});
// ==> ON LOAD <==
getPhotosFromUnsplash();