![]() If you have a problem with Expo, before creating a new issue, please see if there's an existing issue about it in the Expo issues. You can also ask for help on the Expo Discord. Now what?Įxpo also has docs you can reference if you have questions specific to the tool. That's it!Ĭongratulations! You've successfully run and modified your first React Native app. The application should reload automatically once you save your changes. Open App.js in your text editor of choice and edit some lines. Now that you have successfully run the app, let's modify it. ![]() On iOS, use the built-in QR code scanner of the default iOS Camera app. On Android, use the Expo Go app to scan the QR code from your terminal to open your project. Install the Expo Go app on your iOS or Android phone and connect to the same wireless network as your computer. We'll be using JavaScript to add everything from here out.This will start a development server for you. This file is complete and will not change. This HTML skeleton just links to a CSS and JavaScript file, loads in a font, and contains a div with a root id. The project will only consist of index.html, style.css, and scripts.js at the end. We're going to start by creating an index.html file in a new directory. For some background knowledge, Studio Ghibli is a Japanese animation studio that produced several films, such as Spirited Away, which my friend Craig inspired me to use as an example. What is our objective? We want to get the data for all Studio Ghibli films and display the titles and descriptions in a grid. Overall, there are a lot of terms, acronyms and concepts to understand - HTTP, API, REST - so it's normal to feel confused and frustrated, especially when API documentation assumes you already know what to do. Most web apps do, or aim to conform to REST standards. If you've heard REST and RESTful APIs, that is simply referring to a set of standards that conform to a specific architectural style. A web API uses HTTP requests that correspond to the CRUD verbs. Any programming language can be used to make a CRUD app with various methods. You may be familiar with the concept of a CRUD app, which stands for Create, Read, Update, Delete. ![]() ![]() If this is confusing now, it will make sense by the end of the article. In this case, the web server is using HTTP requests to communicate to a publicly available URL endpoint containing JSON data. We'll be focusing specifically on Web APIs, which allow a web server to interact with third-party software. In other words, an API allows software to communicate with another software. How create and display HTML elements with JavaScript.ĪPI stands for Application Program Interface, which can be defined as a set of methods of communication between various software components.Learn how to use the HTTP request GET with JavaScript.This is not meant to be an extensive resource on APIs or REST - just the simplest possible example to get up and running that you can build from in the future. We are going to write from scratch this simple web app that connects to a Studio Ghibli API, retrieves the data with JavaScript, and displays it on the front end of a website. This brief article will clear it up completely.Įverything else we'll cover along the way. Basic knowledge of working with JSON and JavaScript objects.Basic knowledge of JavaScript syntax and datatypes.There will be no server, dependencies, build tools, or anything else to further muddy the waters on an already difficult and confusing topic for beginners. We're going to make a very simple web app with plain JavaScript that will retrieve information from an API and display it on the page. If you've ever taken a look at the documentation for an API and had no idea where to start or what to do and gotten frustrated, this is the article for you. As a fledgling developer, you may have been told at some point to just "play around with some APIs!" to learn what they are and how to work with them. You can use JSON Placeholder in place of the Studio Ghibli API.Ī big part of working with JavaScript is knowing how to connect to APIs. Note: Heroku has shut down the free server tier, and the API that this tutorial relies on no longer exists.
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