WHY USE REACT NATIVE TO PROGRAM YOUR APP

1. WHYUSEREACTNATIVE TO PROGRAM YOURAPP? Atfirst,likemostpeople,IwasskepticalofusingFacebook'sReact.Demos of the extension of React Java Script programming language, JSX made some developers uneasy. For years, people worked with HTML and Java Script separately until React seemingly combined them. Some also questionedwhetheritwasnecessaryfortheretobeanothercustomer-based library in all of the existinglibraries. If you're interested in development costs for apps, read this article: EVERYTHING FOR APP APP Development and AssociatedCosts Asitturnedout,Reactprovedtobethebestsolutionforourownprojectsas wellasforourclients.EvencompanieslikeNetflixorSkypeuseReact.With React Native, the framework is also perfect for app programming. React Native is a great alternative for developing perfomance-strong apps thatfeel at home on both Android andiOS. Now I come to give you an overview of the framework and to report on my favorite features. React is described by its developers as follows: "A JavaScript library for building user interfaces", React puts its focus on the view of the application. That is, when writing a React code, the displayed code will be written React components, which are small parts that describe how the App will looklike. Consider a small example that can be used to display a simple button. const Button = React.createClass({

2. propTypes:{ onPress: React.PropTypes.func.isRequired, text:React.PropTypes.string.isRequired, }, render (){ return( <TouchableOpacity onPress = {this.props.onPress} style = {...}> <Text style = {...}> {this.props.text} </text> </TouchableOpacity> ); } }); This button component has two parts of Input Data: onPress, which is a callbackfunctionincasethebuttonispressed;andtext,whichisresponsible for the view of thebutton. The XML-like structureis called JSX, which is syntactic sugar for React functioncalls.AndTouchableOpacityandTextareexistingcomponentsthat React Nativeprovides. After the creation of the Button component, it can be used again and again in the application, with recurring style andbehavior.

3. This simple example demonstrates how a React app is built. "Piece by piece." Even though the app grows in function, the individual components remain understandable and manageable at everylevel. NATIVE VS HYBRID APPS. WHATSHOULD YOU CHOOSE IN2017? TrulyNative Most apps written with JavaScript use Cordova, or a framework that builds on it, as well as the popular frameworks Ionicor Sencha Touch. But no Cordova App will ever get the feel of a real native App. Scrolling, keyboard behavior and navigation can bring frustrating experiences if they do not work as expected. Even though JavaScript is still written in React Native, the components are rendered as Native Platform widgets. And if you've written apps in Java or Objective C, you'll spot some React Native components rightaway. Ease of learning One of React's biggest strengths is reading comprehension, even for programmers who have not worked with it yet. Many other frameworks first require you to learn a long list of concepts that have nothing to do with the language building blocks. As an example, let's compare the difference between rendering a list of friends in React Native and Ionic (AngularJS) Ionic uses ngRepeatDirectiv. Let's assume we have an order for friends. Each field contains the following fields: first_name, last_name and is_online. But we only want to showthem, which are currently online. Here is ourcontroller: function FriendCtrl ($ scope){

4. $ scope.friends =[ { first_name:, John', last_name: 'Doe', is_online:true, }, { first_name:, Jane', last_name: 'Doe', is_online:true, }, { first_name:, Foo', last_name:, Bar', is_online:false, } ]; }

5. And here is our view: <div ng-controller ="FriendCtrl"> <Ul> <li ng-repeat = "friend in friends | filter: {is_online: true} "> {{friend.last_name}},{{friend.first_name}} </Li> </Ul> </Div> ButifyouareunfamiliarwithIonic/AngularJS,youcandirectlyaskyourself a fewquestions. What is $ scope? What is the syntax for a filter? And how can I add more behaviors, such as sorting the friends list? With React Native, one can revert to already existing knowledge of the language, using the filterand mapfunctions. const DemoComponent = React.createClass ({ render (){ const friends =[ { first_name:, John', last_name:'Doe',

6. is_online:true, }, { first_name:, Jane', last_name:'Doe', is_online:true, }, { first_name:, Foo', last_name:, Bar ', is_online:false, } ]; return( <View> {friends .filter (f =>f.is_online)

7. .map (f => <view> {f.last_name}, {f.first_name} </view>)} </View> ); } }); Since the main part is normal JavaScript and only a few small parts are different, React Native is easier to understand for all programmers and is easy to use even for beginners. React is also a very good learning tool, if you do not know how to use Map or Filter. React also brings you closer to these functions. Developerexperiences "Happydevelopersareproductivedevelopers,"andReactNativehasagood developer environment. Instead of constantly waiting for the code tocompile and restart the app every time you make a small change, your React Native Codebase changes in the running app. ( You cansee a little demo here). And if you've already worked with JavaScript, you probably also know the Chrome Developer Tools. While running React Native in Developer mode, you can tie this to your desktop Chrome browser, so you can use your debugger tools and profiling tools at the same time. React uses native flexboxfor the layout . While every layout engine is different, React Native's support for flexbox means you can use the same layout code for Android, iOS andweb. WHYITISAGOODTODEVELOPAN EFFICIENTMVP

8. CODESHARING We've already looked at how to use code between iOS and Android via React, but can do it on the web. Everything in React that is not bound to a Native Component is already divisible. Imagine an app that can berendered throughservers,orthroughwebbrowsers,orAndroidoriOS,allpoweredby a shared codebase. We're not there yet, but the community is working to it, in unpredictable steps. Our conclusion Due to the ease of development, the quality of the apps, and the diversity of the platform and its environment, our team at Applaunch.io has always enjoyedthelearningprocessanddevelopmentwithReactNative.Ifyouwant to learn more about React Native, click on the links below. If you would like to have an app programmed in React Native, but do not have the time and leisure then just contact our team and we'll be happy to help youanytime.