Performance optimisations for React applications – Alex Reardon – Medium

Performance optimizations for #ReactJS apps:

  • It is the responsibility of this function to return true if the component should update and false if the component should not update.
  • Using tools will help you find performance hotspots specific to your application.
  • Anything else you can think of that avoids creating a new function every time render is called!
  • Every component in React has a shouldComponentUpdate(nextProps, nextState) function.
  • Generally applications want to promote loose coupling (components know as little about other components as possible).

The main performance hotspot in React applications is redundant processing and DOM diffing in components. In order to avoid this return false from shouldComponentUpdate as high up in your application…
Continue reading “Performance optimisations for React applications – Alex Reardon – Medium”

Breaking Changes · facebook/react-native Wiki · GitHub

  • ### New breaking change – **Who does this affect**: – **How to migrate (shown by `react-native upgrade`)**: – **Why make this breaking change**: – **Severity (people affected x amount of work for them)**:
  • Why make the breaking change : Fixes a bug.
  • Why make the breaking change: Resizing is the correct behavior on Android.
  • Not sure if breaking change, we only know of product code this fixed, not broke.
  • Why make the breaking change: Fixes wrong behavior – makes this behave the same as on the web.

react-native – A framework for building native apps with React.
Continue reading “Breaking Changes · facebook/react-native Wiki · GitHub”

Introducing React Component Hierarchy – BPXL Craft – Medium

  • The particular example uses the -c flag to hide container components and highlight children of containers with an asterisk (*).
  • If your container components merely render their children with JSX, that works too.
  • rch uses Babylon to parse your components, which is the same parser that is used in Babel .
  • Is an sample of the output when using rch against the root App component from the open-source SoundCloud client sound-redux .
  • Components may be defined in any way (ES6 React.

React is a great tool for building UIs. Building a React application involves breaking up your app into pieces called “components.” While…
Continue reading “Introducing React Component Hierarchy – BPXL Craft – Medium”

Bugsnag Blog

Crash reporting for React Native   #reactNative

  • React Native apps targeting iOS will also see automatically captured user actions leading up to a crash to help you accurately reproduce errors.
  • Bugsnag for React Native alerts you when crashes happen, and collects diagnostic information for each crash to help you reproduce and fix bugs impacting your users.
  • We map every crash to the user who saw it, so you can see how many users are affected by a particular crash, and surface a list of the users impacted for each error.
  • Fragmentation across mobile devices can make it more complicated to reproduce and fix crashes, and so collecting debug information is essential.
  • You can now automatically detect crashes in your React Native applications using Bugsnag – the first platform with official support for React Native crash reporting.

You can now automatically detect crashes in your React Native applications using Bugsnag — the first platform with official support for React Native crash re…
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Reactjs at Instacart!

  • Software Engineer working at Yahoo!
  • I work for Etsy as a software engineer, and I’m a fan of react.js.
  • Software/web engineer of 20 years, increasingly finding myself with Javascript code in front of me.
  • 7pm – 7:30: @dominic_cocch – Using React-Redux to Animate Programmatically
  • Currently working in a front-end architect role on a complex React/Redux project. …

Instacart is opening its doors to teach us about how they're using React.
Instacart requires everyone who is registered to do so with their first and last names. I'll ping you once to ask yo
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Performance optimisations for React applications — Medium

Performance optimisations for #ReactJS apps:

  • It is the responsibility of this function to return true if the component should update and false if the component should not update.
  • Using tools will help you find performance hotspots specific to your application.
  • Every component in React has a shouldComponentUpdate(nextProps, nextState) function.
  • Generally applications want to promote loose coupling (components know as little about other components as possible).
  • Anything else you can think of that avoids creating a new function every time render is called!

Read the full article, click here.


@ReactiveConf: “Performance optimisations for #ReactJS apps:”


TLDR;


Performance optimisations for React applications — Medium

Higher Order Components: A React Application Design Pattern

Higher order components: A #ReactJS app design pattern

  • Because higher order components often wrap an existing component you’ll often find you can define them as a functional component.
  • You need some of your React components to be able to access this information, but rather than blindly making it accessible for every component you want to be more strict about which components receive the information.
  • We’ll discuss how pure functions keep code clean and how these same principles can be applied to React components.
  • In the React ecosystem these components are known as higher order components because they take an existing component and manipulate it slightly without changing the existing component .
  • A higher order function is a function that when called, returns another function.

Read the full article, click here.


@ReactiveConf: “Higher order components: A #ReactJS app design pattern”


Jack Franklin takes a look at Higher Order Components, a design pattern that helps keep your React applications tidy, well structured and easy to maintain.


Higher Order Components: A React Application Design Pattern

Tony Spiro

JSON Powers The World  #javascript #webdev #angularjs #nodejs #php #RubyonRails #reactjs

  • Notice we have a couple values (array and object) that can nest other values.
  • When we want to request different values from this JSON object, we would simply “namespace” our values.
  • JSON provides the information for the world in which we live.
  • It is in the simple structure, nestable and non-nestable values, that JSON provides so much value.
  • An Object – can nest other values 6. null

Read the full article, click here.


@tonyspiro: “JSON Powers The World #javascript #webdev #angularjs #nodejs #php #RubyonRails #reactjs”


We live in a time when APIs rule the land.  APIs power our world of information from our phones to our desktops to our watches and even our cars.   Every connected device you can think of hooks up to an API for its data DNA.  In our continuously changing environment of programming languages and devices, APIs are the one thing we’ve come to rely on to be the constant.  And in the world of APIs, there is one king of formats and that is JSON.  In this article I’m going to give you a brief introduction to JSON and touch on some of the reasons why it’s been chosen to power our world.


Tony Spiro

More Ways to Extend React Storybook — KADIRA VOICE

We've introduce a new extension API for #reactjs storybook:

  • Today, we are introducing an extension API with which you can write extensions to React Storybook.
  • With addons you can add new functionalities to React Storybook.
  • We started to look for new ways to extend React Storybook while maintaining its stability.
  • You can also share extensions you’ve built and use extensions created by others .
  • You can use the Storybook UI to display anything you want.

Read the full article, click here.


@kadirahq: “We’ve introduce a new extension API for #reactjs storybook:”


We wanted React Storybook to be stable and customizable from day one. This came with a price: contributing to React Storybook was harder…


More Ways to Extend React Storybook — KADIRA VOICE

Save 91% On Our ReactJS Programming Bootcamp! [Deals]

Save 91% On Our ReactJS #Programming Bootcamp!  #Deals

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  • All eight courses are available in our ReactJS Programming Bootcamp Bundle for only $39-that’s 91% off!
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@NerdApproved: “Save 91% On Our ReactJS #Programming Bootcamp! #Deals”


Master this popular JavaScript library with 44 hours of training. All eight courses are available in our ReactJS Programming Bootcamp Bundle for only $39&m


Save 91% On Our ReactJS Programming Bootcamp! [Deals]