How to handle state in React. – React Ecosystem – Medium

How to handle state in React. The missing FAQ.

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#Reactjs #javascript

  • Each one corresponding to the way you create the component: – // Using React.createClass – var Counter = React.createClass({ – getInitialState: function() { – return {counter: 0}; – }, – …});// Using ES6 classes – class Counter extends React.Component { – constructor(props) { – super(props); – this.state = {counter: 0};…
  • Let’s exemplify: – // Don’t duplicate data from props in state – // Antipatternclass Component extends React.Component { – constructor(props) { – super(props); – this.state = {message: props.message}; – } – – render() { – return div{this.state.message}/div; – } – }The problem with the above example is it will only…
  • You can do better just by avoiding this situation: – // Better exampleclass Component extends React.Component { – render() { – return div{this.props.message}/div; – } – }The same applies when you hold state based on props calculation: – // Don’t hold state based on props calculation – // Antipatternclass Component…
  • // Antipatternclass Component extends React.Component { – constructor(props) { – super(props); – this.state = {count: 0}; – } – – render() { – return div{this.state.count}/div; – } – – componentDidMount() { – const interval = setInterval(() = ( – this.setState({count: this.state.count + 1}) – ), 1000); this.setState({interval}); – } componentWillUnmount()…
  • Let’s experiment a little bit to see what happens: – class Component extends React.Component { – constructor(props) { – super(props); – this.state = {count: 0}; – this.onClick = this.onClick.bind(this); – } – – render() { – return div } – – onClick() { – this.setState({count: this.state.count + 1}); – }…

Recently there has been a lot of debate about how to manage the state in React. Some claim that setState() doesn’t work as you might expect. That you have to externalize the state using a Flux-like…
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Front End v. Back End Explained by Waiting Tables At A Restaurant

  • Front End v. Back End Explained by Waiting Tables At A RestaurantIf you have ever visited a sit-down restaurant, then you can understand the difference between front-end and back-end in web development.
  • Here’s the general idea: just like there is a waitstaff and kitchen staff in a restaurant, front-end and back-end divides the functionality of your site.
  • In web development, the front-end is also sometimes called the client-side, while the back-end is also called the server-side.
  • They must be able to quickly browse to see what you offer (HTML/CSS)They must be able to quickly find more resources that will help them make a decision (Interactivity/JavaScript)They must be able to take an action that will lead them closer to their goal (User Request/ JavaScript)An Intro To The Back-EndHave…
  • In the case of the restaurant, this response could be: – The foodA notice that the kitchen has run out of stock for that mealA follow-up question that the waiter did not askNo matter what, the response is delivered to the customers via the waiter.

If you have ever visited a sit-down restaurant, then you can understand the difference between front-end and back-end in web development. When you are just getting started with learning web…
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Why ReactJS Is More in Demand

Why #ReactJS Is More in Demand


 
#WebDev #javascript  #WebApp

  • As stated already, the most compelling feature of React is that it reduces the complexities of user interface.
  • If the mechanism that we are trying to interface can comprehend Javascript, we can use React to build the user interface for it.
  • You describe the user interfaces in React languages and tell it what you want, it will take care to translate your description and prepare the actual interface.
  • You will illustrate user interfaces to React with simple components.
  • When state of a component changes, its User Interface will change automatically.

ReactJS is a JavaScript library for building user interfaces. According to Google Trends data last 5 years in increased popularity of ReactJS development and we explain why ReactJS is more in demand.
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ReactJS and React Native similarities and differences

#ReactJS and #ReactNative similarities and differences - give our #article a read!

  • ReactJS and React Native similarities and differencesReactJS is a JavaScript library created by Facebook to tackle the User Interface needs for high performance and dynamic.
  • Start-up – Contrary to ReactJS, where the developer has to choose a bundler while trying to pick which of the bundling modules will be best for the project, React Native delivers everything needed.
  • Instead, delivers components working similarly and most of them can be translated into their equivalents in HTML, e.g. View to div and Text to something like a mixup of span and p. Due to this, the libraries used with ReactJS cannot be used in the React Native framework.
  • Summary – Both ReactJS and React Native are great for fast complex UI building and transitioning from the former to the latter isn’t hard for those who enjoy learning new JavaScript frameworks.
  • What should be remembered is: – React Native is a framework while ReactJS is a JavaScript libraryReact Native doesn’t use HTMLReactJS gives all the advantages of React NativeReactJS and React Native both follow component-based architectureYou can write native mobile components in React Native to give off the feeling of a…

ReactJS is a JavaScript library created by Facebook to tackle the User Interface needs for high performance and dynamic. The JavaScript library was released in 2011 bringing a fresh outlook on…
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5 Reasons Why I Love React Native – codeburst

“5 Reasons Why I Love #ReactNative” — @AdhithiRavi

  • If you know Javascript, it is easy to learn.I started writing my first React Native app, with zero prior experience in mobile application development.
  • Web developers can leverage their knowledge in Javascript to write React Native apps.
  • Don’t ever waste time recompiling.This is one of my most favorite aspects of developing React Native Apps.
  • Android Date Picker— Underlying Native WidgetiOS Date Picker — Underlying Native WidgetThese are some aspects of React Native that makes the developer’s life much easier and we don’t need to reinvent the wheel here.
  • With React Native build Android, iOS and Windows Apps all in Javascript.5.

React Native is very popular these days, and thousands of apps are already built using React Native. Big names like Facebook, AirBnB, Uber, and many other companies have embraced React Native and are…
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5 Reasons Why I Love React Native – codeburst

5 Reasons Why I Love #reactnative – codeburst

  • If you know Javascript, it is easy to learn.I started writing my first React Native app, with zero prior experience in mobile application development.
  • Web developers can leverage their knowledge in Javascript to write React Native apps.
  • Don’t ever waste time recompiling.This is one of my most favorite aspects of developing React Native Apps.
  • Android Date Picker— Underlying Native WidgetiOS Date Picker — Underlying Native WidgetThese are some aspects of React Native that makes the developer’s life much easier and we don’t need to reinvent the wheel here.
  • With React Native build Android, iOS and Windows Apps all in Javascript.5.

React Native is very popular these days, and thousands of apps are already built using React Native. Big names like Facebook, AirBnB, Uber, and many other companies have embraced React Native and are…
Continue reading “5 Reasons Why I Love React Native – codeburst”

Boost Your User Experience with Lottie for React Native

Check it out:   #reactsharing #UX #Lottie #reactnative #tuts

  • Boost Your User Experience with Lottie for React NativeThis is a technical post about Lottie for React Native — a mobile library for animating your user interface and telling the user stories from a whole new perspective.What is it all about Lottie?Lottie is a library for mobile devices that offers for the team a…
  • And we can always do GIF animations, right?But, as an experienced React Native and mobile developer, I can claim that none of these choices are able to offer you the same look feel that Lottie can.
  • The performance, all the available resources and the proud feeling your team‘s designers will reach with Lottie is the main reason I’m now writing this post.How to Get Started with Lottie for React Native?Either: npm i –save lottie-react-nativeOr: yarn add lottie-react-nativeAfter this, we need to link Lottie on our RN project:react-native…
  • It’s a simple check mark for use cases when the app has successfully completed a user’s action: like really that animation: it’s simple, self explanatory and it also gives a brief glimpse of what can be done with After Effects for Lottie.
  • Also, on Android devices some animations may freeze or be malformed from the original one.So, try to find a balance between using of Animated API and Lottie.

This is a technical post about Lottie for React Native — a mobile library for animating your user interface and telling the user stories from a whole new perspective. Lottie is a library for mobile…
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