9 of the Best Animation Libraries for UI Designers

This is the latest update to our guide to helping you choose the right animation library for each task. We're going to run-through 9 free, well-coded animation libraries best-suited to UI design work — covering their strengths and weaknesses, and when to choose each one.

Take your CSS animations to the next level with our Animating with CSS course by Donovan Hutchinson, the man behind CSS Animation Rocks.

Front-end web design has been through a revolution in the last decade. In the late naughties, most of us were still designing static magazine layouts. Nowadays, we're building “digital machines” with thousands of resizing, coordinated, moving parts.

Quite simply, great UI designers need to be great animators too — with a solid working understanding of web animation techniques.

Keep in mind that we're looking at each library from the perspective of a code-savvy UI designer, not as a “code guru” developer. Some of these libraries are pure CSS. Others are JavaScript, b..

Create a Cron Job on AWS Lambda

Cron jobs are really useful tools in any Linux or Unix-like operating systems. They allow us to schedule scripts to be executed periodically. Their flexibility makes them ideal for repetitive tasks like backups and system cleaning, but also data fetching and data processing.

For all the good things they offer, cron jobs also have some downsides. The main one is that you need a dedicated server or a computer that runs pretty much 24/7. Most of us don't have that luxury. For those of us who don't have access to a machine like that, AWS Lambda is the perfect solution.

AWS Lambda is an event-driven, serverless computing platform that's a part of the Amazon Web Services. It’s a computing service that runs code in response to events and automatically manages the computing resources required by that code. Not only is it available to run our jobs 24/7, but it also automatically allocates the resources needed for them.

Setting up a Lambda in AWS involves more than just impleme..

Cloning Tinder Using React Native Elements and Expo

Making pixel-perfect layouts on mobile is hard. Even though React Native makes it easier than its native counterparts, it still requires a lot of work to get a mobile app to perfection.

In this tutorial, we’ll be cloning the most famous dating app, Tinder. We’ll then learn about a UI framework called React Native Elements, which makes styling React Native apps easy.

Since this is just going to be a layout tutorial, we’ll be using Expo, as it makes setting things up much easier than plain old react-native-cli. We’ll also be making use of a lot of dummy data to make our app.

We’ll be making a total of four screens—Home, Top Picks, Profile, and Messages.

Prerequisites
For this tutorial, you need a basic knowledge of React Native and some familiarity with Expo. You’ll also need the Expo client installed on your mobile device or a compatible simulator installed on your computer. Instructions on how to do this can be found here.

You also need to have a basic knowledge of styles in React..

How to Build a News App with Svelte

Svelte is a new JavaScript UI library that's similar in many ways to modern UI libraries like React. One important difference is that it doesn't use the concept of a virtual DOM.

In this tutorial, we'll be introducing Svelte by building a news application inspired by the Daily Planet, a fictional newspaper from the Superman world.

About Svelte
Svelte makes use of a new approach to building users interfaces. Instead of doing the necessary work in the browser, Svelte shifts that work to a compile-time phase that happens on the development machine when you're building your app.

In a nutshell, this is how Svelte works (as stated in the official blog):

Svelte runs at build time, converting your components into highly efficient imperative code that surgically updates the DOM. As a result, you're able to write ambitious applications with excellent performance characteristics.

Svelte is faster than the most powerful frameworks (React, Vue and Angular) because it d..

Real-time Location Tracking with React Native and PubNub

With ever-increasing usage of mobile apps, geolocation and tracking functionality can be found in a majority of apps. Real-time geolocation tracking plays an important role in many on-demand services, such as these:

taxi services like Uber, Lyft or Ola
food Delivery services like Uber Eats, Foodpanda or Zomato
monitoring fleets of drones
In this guide, we’re going use React Native to create a real-time location tracking apps. We’ll build two React Native apps. One will act as a tracking app (called “Tracking app”) and the other will be the one that’s tracked (“Trackee app”).

Here’s what the final output for this tutorial will look like:

[video width="640" height="480" mp4="https://dab1nmslvvntp.cloudfront.net/wp-content/uploads/2019/09/1569381508tracking.mp4"][/video]

Prerequisites
This tutorial requires a basic knowledge of React Native. To set up your development machine, follow the official guide here.

Apart from React Native, we’ll also be using PubNub, a third-party service t..

How to Build Your First Telegram Chatbot with Node.js

So, this morning you woke up with the idea to develop a way to store and label interesting articles you've read. After playing with the idea, you figure a Telegram chatbot is the most convenient solution for this problem.

In this guide, we'll walk you through everything you need to know to build your first Telegram chatbot using JavaScript and Node.js.

To get started, we have to register our new bot with the so-called Botfather to receive our API access token.

Bot Registration with @BotFather
The first step towards our very own Telegram bot is registering the bot with the BotFather. The BotFather is a bot itself that makes your life much easier. It helps you with registering bots, changing the bot description, adding commands, and providing you with the API token for your bot.

The API token is the most important step, as this allows you to run the code that can perform tasks for the bot.

1. Finding the BotFather
The BotFather can be found on Telegram by searching for &#0..

How to Build Unique, Beautiful Websites with Tailwind CSS

When thinking about what CSS framework to use for a new project, options like Bootstrap and Foundation readily jump to mind. They’re tempting to use because of their ready-to-use, pre-designed components, which developers can use with ease right away. This approach works well with relatively simple websites with a common look and feel. But as soon as we start building more complex, unique sites with specific needs, a couple of problems arise.

At some point, we need to customize certain components, create new components, and make sure the final codebase is unified and easy to maintain after the changes.

It's hard to satisfy the above needs with frameworks like Bootstrap and Foundation, which give us a bunch of opinionated and, in many cases, unwanted styles. As a result, we have to continuously solve specificity issues while trying to override the default styles. It doesn't sound like a fun job, does it?

Ready-to-use solutions are easy to implement, but inflexible and confi..

How to Automatically Optimize Responsive Images in Gatsby

Image optimization — at least in my experience — has always been a major pain when building speedy websites. Balancing image quality and bandwidth efficiency is a tough act without the right tools. Photo editing tools such as Photoshop are great for retouching, cropping and resizing bitmap images. Unfortunately, they are not that good at creating 100% optimized images for the web.

Luckily, we have extension packages for build tools that can optimize images for us quickly:

Gulp: gulp-imagemin
Grunt: grunt-imagemin
Webpack: imagemin-webpack
Parcel: parcel-plugin-imagemin
Unfortunately, image optimization alone is not enough. You need to make sure that the entire website is responsive and looks great at all screen sizes. This can easily be done through CSS, but here lies the problem:

Should you optimize your image for large screens or small screens?

If the majority of your audience is using mobile devices to access your site, then the logical choice is to optimize images for small scr..

Create an Offline-first React Native App Using WatermelonDB

React Native has different database storage mechanisms for different mobile app purposes. Simple structures — such as user settings, app settings, and other key-value pair data — can be handled easily using async storage or secure storage.

Other applications — such as Twitter clones — fetch data from the server and directly show it to the user. They maintain a cache of data, and if a user needs to interact with any document, they call the APIs directly.

So not all the applications require a database.

When We Need a Database
Applications such as the Nozbe (a to-do app), Expense (a tracker), and SplitWise (for in-app purchases), need to work offline. And to do so, they need a way to store data locally and sync it up with the server. This type of application is called an offline first app. Over time, these apps collect a lot of data, and it becomes harder to manage that data directly — so a database is needed to manage it efficiently.

Options in React Native
When developing an app, ch..

SitePoint Premium New Releases: Design Systems, SVG & React Native

We're working hard to keep you on the cutting edge of your field with SitePoint Premium. We've got plenty of new books to check out in the library — let us introduce you to them.

Design Systems and Living Styleguides

Create structured, efficient and consistent designs with design systems and styleguides. Explore materials, typography, vertical rhythm, color, icons and more.

➤ Read Design Systems and Living Styleguides.

Build a Real-time Location Tracking App with React Native and PubNub

In this guide, we’re going to use React Native to create real-time location tracking apps. We’ll build two React Native apps — a tracking app and one that’s tracked.

➤ Read Build a Real-time Location Tracking App with React Native and PubNub.

Practical SVG
From software basics to build tools to optimization, you’ll learn techniques for a solid workflow.

Go deeper: create icon systems, explore sizing and animation, and understand when and how to implement fallbacks. Get your images up t..