#React Tutorials – Day 2 – Environment Setup by @pankajmalhan30 cc @CsharpCorner #ReactJS

#React Tutorials - Day 2 - Environment Setup by @pankajmalhan30 cc @CsharpCorner  #ReactJS

  • Create React App

    After installing the React global packages now run “create-react-app reactapp” command, this command will create a React project and name this project as “reactapp”.

  • Now you are in root directory of the project again run the “npm start” command this command run the React project on “3000” port.
  • Now, run the command “dotnet new React“

    This command creates a template project for React Application.

  • Using Webpack and Babel

    So far we set up the React Environment set up using the npm and Visual Studio 2017 SPA templates.

  • Now we will focus on the Webpack and babel to setup the React project.

In this article you will learn about Environment Setup in React.
Continue reading “#React Tutorials – Day 2 – Environment Setup by @pankajmalhan30 cc @CsharpCorner #ReactJS”

File Upload and POST Request using ReactJS – Jeril Kuriakose – Medium

File Upload and POST Request using #ReactJS

  • File Upload and POST Request using ReactJSSource: makes life simpler.
  • I just wanted to demonstrate the working of file-upload and sending the uploaded file as a POST request.For the demonstration I used the React Boilerplate and was following the Redux architecture.
  • I will be only sharing the components that I used for file upload and POST request.
  • on’ is used to find out the progress of the file upload.
  • The value can be used for several other purposes such as progress bar, to calculate time remaining, etc.Here is the code for uploading and sending the uploaded file as a POST request.We can see the progress output in the console window:File upload and post using ReactJSYou can find the gist of the code here.Happy coding!!!

ReactJS makes life simpler. If you are already working with it, you would be knowing it. I just wanted to demonstrate the working of file-upload and sending the uploaded file as a POST request. For…
Continue reading “File Upload and POST Request using ReactJS – Jeril Kuriakose – Medium”

How to Structure Your React Project

How to Structure Your React Project @dceddia  #Reactjs #Javascript #Webdev

  • If it gets too unwieldy in one file, make a directory and put the area-specific API files under there – like , , etc. – All your Presentational (aka Dumb) components go here.
  • I don’t have to think very hard about where to find a component, or where to put a new file.
  • It’s amazing how much time you can save when the only decision you have to make at the time you create a file is whether it’s a presentational or container component.
  • And then change the scripts to include it:

    If your current level of comfort with React leads you to read articles about how to best organize your project, you probably do not need Redux yet.

  • When you add Redux to your project, start off with something like this:

    If you hate having to jump between files to create an action, check out the Ducks pattern where a reducer + related actions + types are all contained in a single file.

One of many ways to organize the files in a React project.
Continue reading “How to Structure Your React Project”

A Glimpse Into The Future With React Native For Web – Smashing Magazine

A Glimpse Into The Future With React Native For Web – @smashingmag

  • We have already seen how1 React Native can help you make iOS and Android apps with a shared code base, without sacrifices in quality.
  • React Native for Web is intended to let you write a single app that runs in a browser using standard web technologies, or on iOS and Android as a real native mobile app.
  • React Native for Web’s solution is to provide browser-compatible implementations of React Native’s components — meaning, for example, that the of React Native has a DOM-based version that knows how to render to a .
  • At this point, your file should look something like this:

    While we have what seems to be everything required for our React Native app to run in a web browser, we must take a brief detour to consider the realities of web development.

  • This will be a good simple stress test of React Native for Web, because we need to use a few different components for it: , , and .

React Native can help you make iOS and Android apps with a shared code base, without sacrifices in quality. Clayton Anderson takes a glimpse into the future with React Native for Web…
Continue reading “A Glimpse Into The Future With React Native For Web – Smashing Magazine”

Front end architecture – João Paulo Lethier – Medium

Front end architecture  #javascript #frontenddevelopment #react #reactjs #reactjs

  • So, almost every project I worked use MVC architecture, and when I started to work in some front end projects, using angular or react, I tend to structure my project’s folders and files thinking in MVC, using the same structure I would use in a backend project using RubyOnRails.Taking advantage that in my job team, at SumOne, we decided to organize some talks, I choose to do a talk about front end architecture so this would be an opportunity to learn.
  • Besides the type based folder structure, that is similar to MVC structure folders and what I was used to, I found that most front end developers recommend a feature based folder structure to organize project’s code files.So, I did a small presentation and develop a sample project on github to show how a react project would like on each kind of folder structure: type based, feature based and mix based.
  • For example, if you have a list feature, you would have the API file that make the request call to get items to list, action file that call API and return the answer to view and view file itself on the same folder.Lastly, you can use a mix based folder structure, organizing by feature first, and inside of each feature folder.
  • This structure makes easy to find all code related to a feature, for example, if we have a search feature and want to change the api request for the search form, I just have to search for the api file on search feature folder.
  • Following this mix based structure, if you have a large feature, that has a lot of code files, more than one api call, for example, you can organize files by type(API, Services, Actions, Views, Styles, …) inside the feature folder.

I am a developer since 2010, but only recently I started to work a little more with front end frameworks. I’ve worked a lot more with backend development, I have a lot more experience creating and…
Continue reading “Front end architecture – João Paulo Lethier – Medium”

React.js Efficient Server Rendering – Hacker Noon

“React.JS Efficient Server Rendering” by @tigranbs  #NodeJS #reactjs #javascript #python

  • React.js Efficient Server RenderingFor about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more simplicity to frontend.But in some cases we need SEO with dynamic JSX content or we need more performance in load time for a frontend pages.
  • And for that cases Facebook developers made React.js in that way so it can be rendered on Server Side too, using Node.js basic functionality.So the flow is almost similar to this oneClient sending request to get some JSX template pageNode.js server getting main file containing JSX codeRendering it to plain HTML codeSending HTML response to clientUsing HTML markup, then client loading also React.js client side code for adding dynamic logic to rendered HTMLThis is helping to display HTML content faster than React will render it, and it is helping to give some content to Search Engine bots or website crawlers.But What If You Don’t Have Node.JS backend?This is the real questing that was standing for me when I’ve started working on large Python Django project.
  • I decided to do React.js as a frontend, but they hat a lot of Python stuff on a backend, I couldn’t rewrite all code just for server side rendering.
  • I think we really don’t need!And I got an idea to build standalone Node.js Server only for React.js JSX template rendering and nothing else, so I can make a proxy request to that server and it will render JSX content for me and will response pure HTML back to Python Django Template.
  • What is that?So using basic principle of proxy requests I just made very simple code for Pythonimport requestsimport jsonPROXY_RENDER_ADDRESS = ‘http://localhost:3000/’def get_html(filename, props): try: props_str = json.dumps(props) r = + filename , data=props_str , headers={‘Content-Type’: ‘application/json’}) if r.status_code == 200: return r.text, props_str except Exception as e: print(e) return False, FalseWhich is basically making POST Request to proxy rendering service and by passing global state as a JSON, getting back the HTML code rendered by Node.js server.So the main advantages that I gotNo need to integrate Node.js in backend side, or use crappy JS engines in Python, which are eating a lot of memoryAbility to keep JSX template cache, which give huge load time improvementsScale backend services without scaling base rendering service, so you can have multiple servers with single cached rendering service and get better performanceHuge flexibility in writing code.

For about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more…
Continue reading “React.js Efficient Server Rendering – Hacker Noon”

Managing State in React and React Native using ReSub

Managing state in #ReactJS and React Native using ReSub:

  • From their docs:It is fine to use ReSub without TypeScript, but without access to TypeScript’s method decorators, stores and components cannot leverage autosubscriptions, and as such, lose a lot of their value.ReSub would fall in the same categories as Redux or MobX.In my opinion, the closest thing I would compare this to is MobX.
  • tsxNow that our files and dependencies are set up, let’s update the index.ios.js or index.android.js file to use the code that will be compiled by TypeScript.In index.ios.js or index.android.js, update the file to the following:import React, { Component } from ‘react’import { AppRegistry} from ‘react-native’import App from () = App)Now we can go about creating our store.In TodosStore.tsx, create the following class, which we will walk through step by step:At the top of the file, we import StoreBase, which is the base class that ReSub gives us, and what we will extend to create our store, as well as two decorators that will keep the data in sync (autoSubscribeWithKey and autoSubscribeStore).
  • After we do this, we call which will trigger all subscriptions that are subscribed using the decorator, updating components that are using this data with the updated store data.trigger() is available as a method of StoreBase, which we extended to create our store.addTodo will first check to make sure there is a value to be added, and if not will return without doing anything.Otherwise, we then take the existing _textInputValue as well as the existing todos array, and then create a new array, passing in the new todo as the last item in the array.Once the new array is created, we update the _textInputValue to be an empty string, and again call this.trigger()getTodos returns the list of _todos.
  • We add the decorator to make sure that whenever the data changes, any component using this data will be updated.getTextInputValue does the same thing that getTodos does, but for the _textInputValue valueNow that the store is complete, let’s create the last file we will be using, App.tsx.There is quite a bit going on here, and I’ll walk through it next, but it’s really a pretty basic implementation, with a few things that are specific to ReSub, most notably I think is that we are extending the ComponentBase class of ReSub vs the Component class of React.We import the dependencies we will need for the fileWe create a State interface, and in it we declare a todos array and a todo stringWe extend the ComponentBase class of Resub, which gives us not only the lifecycle methods that we are used to in React, but also a few other useful methods, notably _buildState which is what we will be using to tie our component state with the store state.
  • Check out the linked buildState docs to learn more about _buildState, but it basically is a method is called to rebuild the module’s state when the store is updated.The rest of this component is a couple of basic methods updating the store todos array, the store _textInputValue, and adding some styling.Now in the terminal, run typescript:npm run buildNext, run the React Native app in your emulator, and we should see a functioning todo app!Again, the code for this example is located here.My Name is Nader Dabit .

ReSub is a library released by Microsoft + Open Source for writing React components that automatically manages subscriptions to data sources simply by accessing them. In my opinion, the closest thing…
Continue reading “Managing State in React and React Native using ReSub”