Why Use React JS for Fast Interactive User Interfaces? — SitePoint

  • The Virtual DOM is at the core of what makes React fast at rendering user interface elements and their changes.
  • Each time there are changes to the underlying data in a React app, React creates a new Virtual DOM representation of the user interface.
  • This is where efficient diff algorithms, batching DOM read/write operations, and limiting DOM changes to the bare minimum necessary, make using React JS and its Virtual DOM a great choice for building performant apps.
  • Our First 50,000 Stars — Vjeux

    Although some would argue that all projects need React JS, I think it’s uncontroversial to say that React would be a great fit for web apps where you need to keep a complex, interactive UI in sync with frequent changes in the underlying data model.

  • Resources
    If you’re curious about how React JS and its Virtual DOM work, here’s where you can learn more:

    Conclusion
    React JS and other similar JavaScript libraries ease the development of snappy, event-driven user interfaces that are fast at responding to state changes.

Maria Antonietta Perna discusses what makes React JS a great fit for building fast UIs and introduces the concept of the Virtual DOM and how React uses it.
Continue reading “Why Use React JS for Fast Interactive User Interfaces? — SitePoint”

Make React Fast Again [Part 1]: Performance Timeline

Make React Fast Again: Performance Timeline ►►►  #ReactJS #ReactNative

  • Performance timelineReact 15.4.0 introduced a new performance timeline feature that lets you see exactly when components get mounted, updated, and unmounted.
  • While it is typical to have fairly deep component trees in React, if you are optimizing a component that is mounted frequently, it can help to reduce the number of wrapper components since each adds a small performance and memory penalty.One caveat here is that the timing numbers in the timeline are for the development build of React, which is much slower than prod.
  • Also, whether or not a component updates at all is not dependent on a prod build.Demo!For fun, I rigged the TodoMVC app to have some serious performance problems.
  • See if you can spot which components are causing the performance problems :)Debugging Performance Issues in ProductionThe performance timeline feature in React only works in local development, since it gets compiled out of React’s production build.
  • It lets you quickly see which components are updating, and which might be slowing down your app.Since react_perf only works in development, check out LogRocket, for diagnosing bugs and performance issues in production.

React is usually pretty fast, but it’s easy to make small mistakes that lead to performance issues. Slow component mounts, deep component trees, and unnecessary render cycles can quickly add up to an…
Continue reading “Make React Fast Again [Part 1]: Performance Timeline”

Make React Fast Again [Part 1]: Performance Timeline

Make React Fast Again [Part 1]: Performance Timeline @b_edelstein  #Javascript #Reactjs

  • Performance timelineReact 15.4.0 introduced a new performance timeline feature that lets you see exactly when components get mounted, updated, and unmounted.
  • While it is typical to have fairly deep component trees in React, if you are optimizing a component that is mounted frequently, it can help to reduce the number of wrapper components since each adds a small performance and memory penalty.One caveat here is that the timing numbers in the timeline are for the development build of React, which is much slower than prod.
  • Also, whether or not a component updates at all is not dependent on a prod build.Demo!For fun, I rigged the TodoMVC app to have some serious performance problems.
  • See if you can spot which components are causing the performance problems :)Debugging Performance Issues in ProductionThe performance timeline feature in React only works in local development, since it gets compiled out of React’s production build.
  • It lets you quickly see which components are updating, and which might be slowing down your app.Since react_perf only works in development, check out LogRocket, for diagnosing bugs and performance issues in production.

React is usually pretty fast, but it’s easy to make small mistakes that lead to performance issues. Slow component mounts, deep component trees, and unnecessary render cycles can quickly add up to an…
Continue reading “Make React Fast Again [Part 1]: Performance Timeline”

Why Use React JS for Fast Interactive User Interfaces? — SitePoint

Why Use #React #JS for Fast Interactive User Interfaces?  #reactjs #webdev #javascript #jsx

  • The Virtual DOM is at the core of what makes React fast at rendering user interface elements and their changes.
  • Each time there are changes to the underlying data in a React app, React creates a new Virtual DOM representation of the user interface.
  • This is where efficient diff algorithms, batching DOM read/write operations, and limiting DOM changes to the bare minimum necessary, make using React JS and its Virtual DOM a great choice for building performant apps.
  • Our First 50,000 Stars — Vjeux

    Although some would argue that all projects need React JS, I think it’s uncontroversial to say that React would be a great fit for web apps where you need to keep a complex, interactive UI in sync with frequent changes in the underlying data model.

  • Resources
    If you’re curious about how React JS and its Virtual DOM work, here’s where you can learn more:

    Conclusion
    React JS and other similar JavaScript libraries ease the development of snappy, event-driven user interfaces that are fast at responding to state changes.

Maria Antonietta Perna discusses what makes React JS a great fit for building fast UIs and introduces the concept of the Virtual DOM and how React uses it.
Continue reading “Why Use React JS for Fast Interactive User Interfaces? — SitePoint”

8 Reasons Why React.JS is the Best Technology to Develop Kickass Web and Mobile Apps

8 reasons why #reactjs is the best technology to develop kickass web and mobile apps.

  • Any JavaScript developer would find it easy to comprehend the basics of React JS and start developing web apps using this technology within a few days of mastering the docs and tutorials.
  • One of the main reasons to opt for React JS for the web and mobile app development is the JavaScript library.
  • That is why React JS is steadily gaining popularity among the developers of the web and mobile apps.
  • If you are a developer who is concerned with single page applications and want to come up with fast, user-friendly, and responsive apps, React JS is definitely a worthy choice.
  • Considering the advantages offered by this technology, there is no reason why React JS won’t be welcomed by developers in pursuit of creating advanced web and mobile apps.

So what makes React JS a preferred technology to develop kickass web and mobile apps? We list down 8 top reasons in support of it. 1. Easy to learn and master. 2. Simple to write components
Continue reading “8 Reasons Why React.JS is the Best Technology to Develop Kickass Web and Mobile Apps”

Manning

  • Are you ready to start writing your own web apps, games, and programs?
  • Get Programming with JavaScript is a hands-on introduction to programming for readers who have never written a line of code.
  • Since you’re just getting started, this friendly book offers you lots of examples backed by careful explanations.
  • You don’t need any­thing special to follow the examples—just the text editor and web browser already installed on your computer.
  • We even give you links to working online code so you can see how everything should look live on your screen.

Provides the guidance you need to get started …, the support to keep practicing, and the encouragement to enjoy the adventure.
Continue reading “Manning”

Facebook’s new tool helps you get started quickly with React Native projects on any OS

Facebook's new tool helps you get started quickly with React Native projects on any OS

  • You might want to consider building it with a new React Native tool from the folks at Facebook, which works for iOS and Android projects on any OS.
  • With the launch of Create React Native App (CRNA), you don’t need Xcode or even a Mac to build iOS apps, and similarly, Android Studio and other dependencies aren’t required for creating Android software.
  • This is made possible with Expo (formerly known as Exponent), an app that runs CRNA without compiling native code and allows you to control native UI components on both mobile platforms using JavaScript.
  • However, if you need to include native code in your project, you’ll have to eject it and then continue your build in Xcode or Android Studio.
  • Next, open the QR code that’s automatically generated using the Expo Android or iOS app on your mobile device, and you’re good to go.

Got an idea for a new app? Consider building it with a new React Native tool from the folks at Facebook, which works for mobile projects on any OS.
Continue reading “Facebook’s new tool helps you get started quickly with React Native projects on any OS”