JavaScript Promise Example with API

gistfile1.txt

<script>

function fetchPhotos() {
	return fetch('https://jsonplaceholder.typicode.com/photos');
}

function fetchPhoto(id) {
	return fetch('https://jsonplaceholder.typicode.com/photos/' + id);
}

function getLastPhotos() {

	fetchPhotos()
		.then(photos => photos.json())
		.then(photosJson => {
			return photosJson
						.slice(0, 5)
						.map((photo) => photo.id);
		}).then(idArray => {
			let promises = [];
			idArray.forEach((id) => {
				promises.push(fetchPhoto(id));
			});

			return Promise.all(promises);
		}).then(photos => {
			return photos.map(photo => photo.json());
		}).then(photosJson => {
			photosJson.forEach(photoJson => {
				photoJson.then(p => console.log(p));
			})
		});
}

getLastPhotos();

</script>