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React and React Native

React and React Native

By : Mikhail Sakhniuk, Roy Derks, Adam Boduch
4.3 (10)
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React and React Native

React and React Native

4.3 (10)
By: Mikhail Sakhniuk, Roy Derks, Adam Boduch

Overview of this book

Welcome to your big-picture guide to the React ecosystem. If you’re new to React and looking to become a professional React developer, this book is for you. This updated fifth edition reflects the current state of React, including React framework coverage as well as TypeScript. Part 1 introduces you to React. You’ll discover JSX syntax, hooks, functional components, and event handling, learn techniques to fetch data from a server, and tackle the tricky problem of state management. Once you’re comfortable with writing React in JavaScript, you’ll pick up TypeScript development in later chapters. Part 2 transitions you into React Native for mobile development. React Native goes hand-in-hand with React. With your React knowledge behind you, you’ll appreciate where and how React Native differs as you write shared components for Android and iOS apps. You’ll learn how to build responsive layouts, use animations, and implement geolocation. By the end of this book, you’ll have a big-picture view of React and React Native and be able to build applications with both.
Table of Contents (33 chapters)
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1
Part I: React
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7
Type-Checking and Validation with TypeScript
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8
Handling Navigation with Routes
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13
State Management in React
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14
Server-Side Rendering
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15
Unit Testing in React
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16
Part II: React Native
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29
Controlling Image Display
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31
Other Books You May Enjoy
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32
Index
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Using the Geolocation API

The Geolocation API that web applications use to figure out where the user is located can also be used by React Native applications because the same API has been polyfilled. Other than maps, this API is useful for getting precise coordinates from the GPS on mobile devices. You can then use this information to display meaningful location data to the user.

Unfortunately, the data returned by the Geolocation API is of little use on its own. Your code must do the legwork to transform it into something useful. For example, latitude and longitude don’t mean anything to the user, but you can use this data to look up something that is of use to the user. This might be as simple as displaying where the user is currently located.

Let’s implement an example that uses the Geolocation API of React Native to look up coordinates and then use those coordinates to look up human-readable location information from the Google Maps API.

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