React Router 4: A Practical Introduction

React Router 4: A Practical Introduction  #reactjs

  • In previous versions of React Router such as v3, route protection code looks like this: – – The component had a prop that accepts a method that allows entry or refusal to a URL location based on a user’s authentication status.
  • In this example, the Auth Service will simply be an object like so: – – Now, let’s build the like so: – – The code above simply illustrates that if the authentication status of the user is true, then a component would be rendered else the user would be redirected…
  • is a higher order component from React Router that allows re-rendering of its component every time the route changes with the same props.
  • Add code to your like so: – – In the code above, we imported a new component, from React Router.
  • Now, all we need to do is map over the routes array as shown in the code below: – – In the code above, whenever the route’s path matches the URL location, the leftbar component will be rendered.

React Router 4 uses declarative approach to routing. In this tutorial, you’ll learn how to use React Router 4 in your web projects via practical examples.
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React JS 2018 Kick-Off Tickets, Mon, Mar 19, 2018 at 5:00 PM

React JS 2018 Kick-Off RSVP - 20 seats left!!

  • 5:30 Pragmatic Patterns For Maintainable React Apps by Steven Hicks Sr.
  • JavaScript Engineer at NM – – 6:00 Building a Website with Gatsby.js by Adam Pritzl Software Consultant at Centare – – The event, food, drinks, and instruction is FREE!
  • Are you building a React app, but struggling to navigate the existing code?
  • Join the conversation with Zach Willard on React 16 to discuss the new features and licensing and how it can have a positive impact on your business and projects.
  • In the last five years, he has also picked up Javascript using a variety of frameworks including AngularJS and React.

Eventbrite – Gufsky presents React JS 2018 Kick-Off – Monday, March 19, 2018 at The Box, Milwaukee, WI. Find event and ticket information.
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React JS 2018 Kick-Off Tickets, Mon, Mar 19, 2018 at 5:00 PM

React JS 2018 Kick-Off Adam will be introducing us to Gatsby.js

  • 5:30 Pragmatic Patterns For Maintainable React Apps by Steven Hicks Sr.
  • JavaScript Engineer at NM – – 6:00 Building a Website with Gatsby.js by Adam Pritzl Software Consultant at Centare – – The event, food, drinks, and instruction is FREE!
  • Are you building a React app, but struggling to navigate the existing code?
  • Join the conversation with Zach Willard on React 16 to discuss the new features and licensing and how it can have a positive impact on your business and projects.
  • In the last five years, he has also picked up Javascript using a variety of frameworks including AngularJS and React.

Eventbrite – Gufsky presents React JS 2018 Kick-Off – Monday, March 19, 2018 at The Box, Milwaukee, WI. Find event and ticket information.
Continue reading “React JS 2018 Kick-Off Tickets, Mon, Mar 19, 2018 at 5:00 PM”

Day 53 of #100DaysOfCode : #ReactJS Project – Create React App -…

  • Inside that directory, it will generate the initial project structure and install the transitive dependencies: – – No configuration or complicated folder structures, just the files you need to build your app.
  • Once the installation is done, you can open your project folder: – – Inside the newly created project, you can run some built-in commands: – – Runs the app in development mode.
  • Builds the app for production to the folder.
  • The User Guide includes information on different topics, such as: – – A copy of the user guide will be created as in your project folder.
  • Your environment will have everything you need to build a modern single-page React app: – – Check out this guide for an overview of how these tools fit together.

GitHub is where people build software. More than 28 million people use GitHub to discover, fork, and contribute to over 80 million projects.
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Server Rendering with React and React Router

Server Rendering with React and React Router, by @tylermcginnis  #reactjs #react

  • Now that we get the big picture, let’s work on creating the foundation for what will become a server rendered React Router app.
  • Here’s what the React docs have to say about this – – When you’re just rendering a component with no data, it’s not difficult to have the server rendered and client rendered content be identical – as we saw when we just rendered .
  • You need to make sure that the component is rendered with the same data (or props) on both the client and server.
  • The idea is when a GET request is made to our server, instead of calling immediately, we fetch the popular repositories first and then call it after giving our React app the data.
  • The client because it obviously needs to know which components to render as the user navigates around our app and the server because it needs to know which data to fetch when the user requests a specific path.

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Beyond React 16: Time Slicing and Suspense API

  • The latest release of ReactJS which is React 16 ships with a lot of features such as , , , and many others.
  • A sneak peek into new features coming to React was demoed by the creator of Redux and React core team member, Dan Abramov at JSConf Iceland, 2018.
  • Making it easier for developers to build great user experiences using ReactJS has always been the goal of the ReactJS team.
  • Time-slicing allows ReactJS, which now runs on React Fiber, to split computations of updates on children components into chunks during idle callbacks and rendering work is spread out over multiple frames.
  • Besides the steps shown in this section, the guide also shows: – – I’m overwhelmed by the engagement of React core team members with members of the JavaScript community in landing new features in React.

Time Slicing, Suspense and the Fetcher API are new features and concepts that will land soonest in stable releases of ReactJS. Learn how they work.
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A first look at Async React + Apollo – Apollo GraphQL

A first look at #Async #reactjs + #Apollo – Apollo #GraphQL  #javascript

  • A first look at Async React + ApolloThe suspense was killing us, so we built async React Apollo!Like many members of the React community, the Apollo team eagerly woke up at 5:00 AM to catch Dan Abramov’s talk on the future of React at JSConf Iceland.
  • Showcasing two outstanding demos, Dan illustrated some of async React’s new features such as time slicing and suspense.
  • Thanks to James Baxley III, we shipped a prerelease of React Apollo 3.0 that’s 100% strict mode compliant, which is essential in order for your library to be async compatible.
  • Here’s a step-by-step breakdown from Andrew about how it works: – Let’s look at how Dan implemented data fetching with suspense in the I/O demo from his talk: – Fetching data in render! 😮Under the hood, the createFetcher function uses React’s new cache implementation called simple-cache-provider in order to suspend the…
  • Aside from setting the asyncMode flag on your Query component, you’ll notice not much has changed with how you build Apollo apps in an async React world vs. how you build them today.

Like many members of the React community, the Apollo team eagerly woke up at 5:00 AM to catch Dan Abramov’s talk on the future of React at JSConf Iceland. With big mugs of coffee in hand, we glued…
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How to Connect your React App to a REST API – codeburst

  • Today we are going to connect this app to an existing REST API and use the fetched data to display our previously created list of contacts.Over the whole series of articles, we’re going to build a functional contact list with React:Part 1 — How to Create a React App with create-react-appPart 2 — How…
  • This way, the app fetches contacts at the startup and fills our contact list with data.PreparationsIf you don’t have the source code of the previous part ready, you can clone it from GitHub, install the dependencies and start the appgit clone contacts-managergit checkout part-2npm installnpm startThe app is now available…
  • To begin, let’s install axios: In your root directory (where your package.json is) execute the following command line:npm i -S axiosNext, open your App.js and perform the following actions:add the componentDidMount lifecycle method to the App component.import axios from the just installed packageadd the axios GET request to componentDidMount to…
  • Since it is empty, it is the initial State object with a replaced “contacts” property.Finally — Set the new StateNow that we got our data, picked the relevant parts out of it and created a “new” State object, we store it in the State of the App call, puts the “newState” object as…
  • Also, you learned that if you want to fetch data from a server at the startup of the app, you’ll do it in componentDidMount in a suitable component.You also learned, how to set State and that you can pass an object or a function to setState.Last but not least, you’ve…

In the previous parts of this series you learned how to bootstrap a new React app with create-react-app and create a list component. Today we are going to connect this app to an existing REST API and…
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react-props-monitor now too with #react16 #reactjs #styledcomponents 😎

react-props-monitor now too with #react16 #reactjs #styledcomponents 😎

  • In-depth checking props in runtime for any React app.
  • PropsMonitor displays exactly which props caused the error based on PropTypes of component.
  • You can define any validation function for props, based on prevProps, nextProps and name of component.
  • ({ nextProps }) { ( . )
  • ; ; }; ({ prevProps, nextProps, name }) { ( name prevProps .

react-props-monitor – In-depth checking props in runtime for any React app.
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