React Developer Tools is a very useful browser extension for developing React applications.
Unfortunately, not many React developers know why or how it’s used. This tool helps you write better code and make better applications.
First, you need to install it as a browser extension. It’s currently available for Chrome, Firefox, and Edge.
To open React Developer Tools, right-click anywhere in the browser then click on inspect, this will open the browser Developer Tools. You can also open it by pressing F12. In addition to the normal tabs like console, elements, etc., you will have two new tabs, Components and Profiler.
The components tab shows us the structure of components in the React app, and how the components are nested. It’s used for inspecting the components tree.
Locating components is very simple. You click on the component you want to inspect or you can use the search bar, which is very useful if the components tree is deeply nested.
When you select a component, some of its information will be shown in the right panel like its parent component and the props that were passed to it.
When you select a component, the corresponding element will be selected on the page.
The elements tab and component tab are connected, so if you select a component in the component tab, it will be selected in the elements tab and vice versa.
The components tab is also connected to the console tab. When you select a component, head over to the console tab and type $r. It will give all the info that you can see in the component tab.
Profiler is used in monitoring performance. It allows us to record interactions. We need two or more components to be able to record an interaction so we can see how long each component took to get rendered to the page. This allows us to know which components are slowing down our app so that we can improve its performance.
Now that we know how to inspect components using React Developer Tools, we can find and resolve issues much quicker, which gives a much better React developing experience overall.
Using their knowledge in React along with other technologies like HTML, CSS, etc., they can do a lot of amazing things. Here are some of them:
All the amazing UI that you see on websites from icons and images to gesture-driven features like swiping, drag-and-drop, and long-pressing are made by React developers.
Translating website wireframe into code: React developers take wireframes and convert them into actual functioning websites.
Optimization of app functionality: Not only do React developers design and create new features, but they are also responsible for cross-platform functionality. They make sure that the application can run efficiently on different browsers and devices.
Since React developers are involved with all stages of UI development they need to test the applications they are developing.
To understand why React developers love Node we need to understand what Node is. Node is an open-source, cross-platform runtime environment for developing server-side applications. Node is built on Chrome’s V8 engine.
NPM is the package manager for Node. It contains thousands of free packages, and since NPM is installed when you install Node, it’s incredibly easy to download and use packages.
In Node, all APIs are asynchronous (non-blocking) which means that the Node server does not
wait for the API to return the data.
Node is built on the V8 engine, which makes it very fast in executing code.
Node applications output data in chunks, they never buffer any data.
So, yes, with React Native we can create a single application that runs natively on iOS and Android as well as the browser using standard web technologies.
But if React was specifically built for the web, why are we even considering React Native as an option for web development?
In reality, the foundation of mobile applications is very different from the foundation of a web application. For example, in React basic HTML elements like div are used to construct the layout, while in React Native custom UI APIs like view are used. Because of this, few technologies support building web applications and also mobile applications. React Native was built as an attempt to solve this problem. Using React Native you can build cross-platform applications that run on both mobile and web using a single codebase.
Becoming a good React developer can be very hard, but with the right learning methods and the right attitude, you can make learning React a fun, easy journey instead of a long, boring one.
Here are five steps to get you started:
Most people can’t excel at React because they don’t dedicate enough time and focus to coding, So you need to make coding a daily habit. Also, watching tutorials all day will not teach you React. There are some things that you won’t be able to learn unless you practice them yourself and you will find yourself noticing small details that you completely missed before.
Focused coding is coding in a quiet place where you can completely focus on what you are doing. During this time you won’t be only coding, you will also be researching information, trying to solve errors, and a lot more. So how you code is very important, you could spend the entire day in front of your computer screen without learning anything.
Most people look for online courses or books when they want to learn React but let me give you a word of advice. The best way to learn React is to read its documentation, you will even find that most working React developers rely on it to get information. In my opinion, it’s the best guide you will find online. It’s up to date, it will get you familiar with the basic concepts, and it has many examples that you can try.
After reading the documentation and familiarizing yourself with React, building React apps is the
best way to sharpen your skills. Start with building small apps then start expanding them and adding more features. And don’t worry if you encounter a problem that you can’t solve, thanks to React’s big community you will find a lot of help online.
Working for long periods every day without taking a break will burn you out very quickly. If you are
feeling tired it’s very important to take a break. If you don’t, you won’t be able to consume any new information, you will only waste time and tire yourself even more. So remember to get enough sleep and take a break away from coding every once in a while, get away from your computer, go outside, and breathe some fresh air. It will do you a world of good, and remember that slow and steady wins the race.
There are basics that you need to learn to become a React developer, here are some of them:
You can’t be a React developer without learning HTML and CSS. They are essential in web development and creating UIs. Also, JSX, which is one of the most important parts of React, is very similar to HTML.