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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 = [];
//Unsplash API
const count = 30;
const collections = 1270951;
const apiKey = 'QgF5GGfG8BlEQVl-qbxPa6vwBAIMQZ4sgb8_ULoUBsA';
const apiURL = `https://api.unsplash.com/photos/random/?client_id=${apiKey}&count=${count}&collections=${collections}`;
//Check if all images were loaded
function imageLoaded(){
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 and add it 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',
});
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> and <a> inside imageContainer
item.appendChild(img);
imageContainer.appendChild(item);
});
}
//Get photos from Unsplash API
async function getPhotos(){
try{
const response = await fetch(apiURL);
photosArray = await response.json();
displayPhotos();
}catch (error){
//Catch 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;
getPhotos();
}
});
//On Load
getPhotos();