Recent Posts for wordpress.js

class RecentPosts {
	constructor(element, number, url) {
		const div = document.querySelector(element);
		this.url = url || window.location.origin;
		this.getPosts()
			.then(data => this.removeUnwanted(data, number))
			.then(data => {
				data.forEach(post => {
					if (post)
						div.innerHTML =
							div.innerHTML + `<li><a href=${post.link}>${post.title}</a></li>`;
				});
			});
	}

	async getPosts() {
		const posts = await fetch(this.url + "/wp-json/wp/v2/posts");
		return posts.json();
	}

	removeUnwanted(data, number) {
		return data.map(({ title: { rendered: title }, link }, i) => {
			if (i < number) {
				return {
					title,
					link
				};
			}
			return;
		});
	}
}