How to use React Lifecycle Methods » Andreas Reiterer

How to use #ReactJS Lifecycle Methods:  by @a_reiterer #JavaScript #Code

  • React components have several “lifecycle methods” that allow us to execute actions (e.g.: fetching data from a server) at particular times.
  • There are three particular stages in the lifecycle of a component, that are important for our lifecycle methods, which I will explain: – – When React creates an instance of a component and inserts it into the DOM (mounting), the following methods are called: – – If props or state…
  • That process is called unmounting and means that the following method is called: – – I hope I could give you a short overview of the life of a React component and the calling order of lifecycle methods.
  • Some people suggest to use it for doing some configuration of the root component that you can only do at runtime (e.g.: setting up a Firebase connection) – – Whenever this method is called, React has already rendered our component and put it into the DOM.
  • This means, it could be possible that the method returns false but React still decides to re-render the component.

Use React lifecycle methods to perform actions on mount, update and unmount of a component. Learn more about e.g. componentDidMount and when to use it
Continue reading “How to use React Lifecycle Methods » Andreas Reiterer”

Mike Grabowski: Compared to its alternatives, React is what makes React Native shine

.@Grabbou: Compared to its alternatives, #ReactJS is what makes React Native shine

  • We have special weekly meetings of every open source project team which makes it easy to join any time.
  • We plan to make it public at some point, so that it’s not only transparent for folks what we are up to, but also easy to join and help us deliver for better tomorrow.Does the focus on modern technology stack help Callstack acquire more clients?It is just one of the…
  • What they are looking for is to solve specific problems that they have, and right now, the best answer to this problem is: Use React Native.What’s the best use case for choosing React Native over fully native applications?If you have an app that’s already written in React and looking into…
  • There are hundreds of other, perfectly legitimate use cases, to go with React Native.Have you experienced React license issues bothering your clients?No.What do you think is the future web and mobile development?That really depends on vendors.
  • I am paying attention to the way Kotlin evolves on other platforms as well as Flutter, that unlike React Native, uses its own rendering engine and compiles ahead of time.Are you excited about speaking at React Day Berlin?Yeah, totally!

Because Mike is going to speak about animation in React Native at React Day Berlin on December 2, we asked him a couple of questions about his experience with the technology and his current position…
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MongoDB, React, and Node.js tutorial for Azure

🌌 Create a #MongoDB app with @reactjs and #AzureCosmosDB

  • The app used Node and Express for the server, connects to Azure Cosmos DB with the MongoDB API, and then connects the React front-end to the server portion of the app.
  • The tutorial also demonstrates how to do point-and-click scaling of Azure Cosmos DB in the Azure portal and how to deploy the app to the internet so everyone can track their favorite heroes.
  • Azure Cosmos DB supports MongoDB client connections, so you can use Azure Cosmos DB in place of MongoDB, but use the same code that you use for MongoDB apps; but with added benefits such as simple cloud deployment, scaling, and super-fast reads and writes.
  • In this video, Burke Holland gives an introduction to Azure Cosmos DB and walks you through the app that is created in this video series.
  • This video shows how to create an Azure Cosmos DB account in the Azure portal, install the MongoDB and Mongoose packages, and then connect the app to the newly created account using the Azure Cosmos DB connection string.

Learn how to create a MongoDB app with React and Node.js on Azure Cosmos DB using the exact same APIs you use for MongoDB with this video based tutorial series.
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5 Reasons Web Developers Love React Native

5 Reasons Web Developers Love #ReactNative @shoutem #webdev

  • As you probably know, there are a few other multi-platform solutions, like Cordova and PhoneGap, but they come with a price: the price of relying only on the phone browser and its built-in JavaScript engine, which is often way slower than running native code, like React Native does.
  • Another thing that will make things, if not familiar, then definitely easier to work with is Nuclide, an integrated development environment (IDE) that Facebook is building to give developers a first-class developing environment for React Native.
  • Since this is all pretty new, uncharted territory, a lot of developers are doing their best to build something useful to others and unveil the true potential of React Native.
  • The biggest, most active groups is React Native Community, which offers daily posts about tool kits, components, new apps, and answers to questions about React Native, from basic questions to serious developer problems.
  • That’s where you come in: a new React Native developer, resolving problems and bringing new ideas to this fast-rising framework of the future.

React Native is the future of modern app development. The framework is not just for web developers, the entire development logic uses modern principles. React Native workflow is efficient, easy, and quick to learn and more platforms are using it.
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How to use React Lifecycle Methods » Andreas Reiterer

  • React components have several “lifecycle methods” that allow us to execute actions (e.g.: fetching data from a server) at particular times.
  • There are three particular stages in the lifecycle of a component, that are important for our lifecycle methods, which I will explain: – – When React creates an instance of a component and inserts it into the DOM (mounting), the following methods are called: – – If props or state…
  • That process is called unmounting and means that the following method is called: – – I hope I could give you a short overview of the life of a React component and the calling order of lifecycle methods.
  • Some people suggest to use it for doing some configuration of the root component that you can only do at runtime (e.g.: setting up a Firebase connection) – – Whenever this method is called, React has already rendered our component and put it into the DOM.
  • This means, it could be possible that the method returns false but React still decides to re-render the component.

Use React lifecycle methods to perform actions on mount, update and unmount of a component. Learn more about e.g. componentDidMount and when to use it
Continue reading “How to use React Lifecycle Methods » Andreas Reiterer”

Checklist to Deploy React Native to Production – The React Native Log – Medium

Checklist to Deploy React Native to Production -

  • Checklist to Deploy React Native to ProductionMany React Native developers came to mobile development from a background of web development (like me).
  • That’s one of the reasons React Native is appealing — it’s so much like the web.But because of this we often have a gap of knowledge, namely around bringing the app to production.
  • The web has its challenges but mobile development has a different set of challenges — challenges we may not necessarily be familiar with.I know this is something I struggled with so I wanted to put together a quick checklist of tasks you can use to successfully bring your React Native app to…
  • 🤑AndroidCreate Google Play Developer Account ($25)Add app icons to your app (I typically use this tool to generate all necessary sizes)Add splash screens to your app (I typically use this tool to generate all necessary sizes)Update the package name of your applicationGenerate the Signed Production APKCreate app in the Google…
  • Uploading a new version of your app isn’t quite as fast as it is on the web so you really want to make sure your app isn’t going to crash 😅Add basic offline support.

Many React Native developers came to mobile development from a background of web development (like me). That’s one of the reasons React Native is appealing — it’s so much like the web. But because of…
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Expo SDK 21.0.0 is now available – Exposition

  • We do recommend updating sooner rather than later — see this commit from our template projects for an example of how to update.When developing, using the new API lets us show an error screen if an error is hit during the first render of your app, instead of hanging or restarting:Note that…
  • This should make it significantly easier to tell the difference between an error loading your app and a slow network connection.If you are experiencing slow loading times when developing your app, check to see if you have the “tunnel” mode enabled in XDE/exp and try using LAN connections if your…
  • There is an example in the Native Component List, and Brent has also published a couple of example projects using the new API:We do have a documentation page for this API, although for the time being it just points to the GitHub repository.Google AdMobSDK 21 now supports displaying ads through…
  • To help your App Review process go more smoothly, we’ve decided to remove the Stripe SDK and experimental Payments API from apps built with the Expo standalone builder.
  • This was a problem with a dependency we used for detecting the machine IP address, and has been fixed.Upgrading Your AppHere’s how to upgrade your app to Expo SDK 21.0.0 from 20.0.0:Close XDE or your exp CLI serverIn app.json, change sdkVersion to “21.0.0”In package.json, change these dependencies:- react-native to expo to…

I am happy to announce the release of Expo SDK 21.0.0! It is based on React Native 0.48 “August”. Our previous SDK, 20.0.0, is based on React Native 0.47 “July”. AppLoading has been extended with new…
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