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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 = [];
// Unsplash API
const initialCount = 5;
const standardCount = 30;
const apiKey = '5ERdzsMSeG2OvNFGpXWoeONxUIZX3rNX9wk90Fti1RI';
let apiUrl = '';
if (!apiKey) {
console.error('API Key is missing!');
process.exit(1);
}
console.log(`Your API Key is: ${apiKey}`);
// 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, 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 both inside image Container Element
item.appendChild(img);
imageContainer.appendChild(item);
});
}
// Get Photos from Unsplash
async function getPhotos(amountToFetch) {
apiUrl = 'https://api.unsplash.com/photos/random/?client_id='+apiKey+'&count='+amountToFetch;
try {
const response = await fetch(apiUrl);
photosArray = await response.json();
displayPhotos();
} catch {
// Catch error here
}
}
// 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(standardCount);
}
});
//On Load
getPhotos(initialCount);