Understanding React — Component life-cycle – Bartosz Szczeciński – Medium

Understanding React — Component life-cycle

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#Reactjs #programming

  • In all other instances remember to use this.setState – DO – set initial stateif not using class properties syntax — prepare all class fields and bind functions that will be passed as callbacksDON’T – cause any side effects (AJAX calls is a somehow special case — componentWillMount does not differ much from constructor -…
  • DO – update state via this.setStateperform last minute optimizationcause side-effects (AJAX calls etc.) in case of server-side-rendering onlyDON’T – cause any side effects (AJAX calls etc.) on client function will be called in each update life-cycle caused by changes to props (parent component re-rendering) and will be passed an object…
  • DO – use for increasing performance of poor performing ComponentsDON’T – cause any side effects (AJAX calls etc.)call nextState)If the shouldComponentUpdate function is not implemented, or it decided that the component should update in this render cycle, another life-cycle function will be called.
  • == this.props.myProp) { – // this.props.myProp has a different value – // we can perform any operations that would – // need the new value and/or cause side-effects – // like AJAX calls with the new value – this.props.myProp – } – }DO – cause side effects (AJAX calls etc.)DON’T…
  • DO – cause side effects (AJAX calls etc.)DON’T – call this.setState as it will result in a re-renderAn exception to the above rule is updating the state based on some DOM property which can be only computed once a component has re-rendered (e.g. position / dimensions of some DOM nodes)….

React provides developers with many methods or “hooks” that are called during the life-cycle of an component, which allows us to update the UI and application state. Knowing when to use which of them…
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Top 10 Sites Built With ReactJS

Top 10 popular websites built with #ReactJS



#webdev #javascript #webapp

  • Airbnb is an America-based company known for operating an online marketplace that offers hospitality service to people looking to rent or lease short-term lodging facilities such as apartments, holiday cottages, hostel beds, homestays or hotel rooms and facilitate experiences or participate in tourism concepts like walking tours and theme tours…
  • It collects and presents content from news feeds, social media and photo sharing sites as well as various other websites and offers it in a magazine format, allowing users to simply “flip” or turn over the “pages” through the articles, journalistic pieces, images and videos that are being shared.
  • Netflix is an American entertainment company that specializes in online streaming media services, DVD by mail and online video-on-demand facilities.
  • The site often offers viral images and memes that enjoy considerable popularity in the online world and social media.
  • The company regularly works as payment processor for various auction sites, online vendors as well as various other commercial users.

ReactJS is used for building user interfaces and used in the development of single-page applications & mobile applications. Nowadays Reactjs have more demand and we explain top 10 popular websites build with Reactjs.
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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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The Official Microsoft ASP.NET Site

  • The product(s) you are about to install leverage the Web Platform Installer (WebPI) for installation.
  • By downloading and using the Web Platform Installer (WebPI), you agree to the license terms and privacy statement for WebPI.
  • This installer will contact Microsoft over the Internet to retrieve product information.
  • WebPI uses the Microsoft Customer Experience Improvement Program (CEIP), which is turned on by default, see privacy statement for more information.
  • To view which software uses CEIP, see here.

Home of the Microsoft ASP.NET development community. Download Visual Studio, post to the forums, read ASP.NET blogs and learn about ASP.NET.
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Welcome on Front-Commerce’s Demo Store

  • With Front-Commerce, you can integrate content and data from any API on your front-end.
  • With Front-Commerce, you can integrate content and data from any API on your front-end.

Site de démonstration d’une plateforme e-commerce dynamique et épurée.
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Implementing an Infinite Scroll with Vue.js ← Alligator.io

Implementing an Infinite Scroll with Vue.js  #UI #reactjs #javascript #react

  • For this post, we’ll go without a plugin or package and we’re going to be writing a simple JavaScript function that fetches a new set of data when scrolled to the bottom of the browser window.
  • Before we start integrating the infinite scroll, let’s fetch and set some initial data on page load: – – It’s worth noting that it’s not recommended to make five services calls on load.
  • We’ll make use of the document object’s , properties and of window’s properties to determine if scroll as at the bottom: – – Inside this condition, let’s add a service method with Axios to fetch another random user from the Random User API.
  • This function makes a service call and adds a new random “user” to the array only when the user scrolls to the bottom of the page.
  • With each scroll to the bottom of the page, we fetch new data with Axios then push that data to an array.

Learn how to implement a simple infinite scroll for your Vue apps using nothing but some vanilla JavaScript and a simple Random User API.
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Setting up React Project with Parcel zero configuration approach.

Setting up React Project with Parcel zero configuration approach.

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#Reactjs

  • Setting up React Project with Parcel zero configuration approach.Learn how to configure React with Parcel module bundler in this brief tutorial – Parcel is a new module bundler for Javascript applications.
  • Setting up React with Parcel bundler: HTML and friendsBefore processing any HTML in webpack you must install two dependencies: the HTML plugin and the HTML loader.
  • Setting up React with Parcel bundler: setting up BabelReact components are mostly written in Javascript ES6.
  • As with webpack, Parcel should transform raw React components into a meaningful Javascript bundle.
  • Setting up React with Parcel bundler: wrapping upParcel is a new module bundler for Javascript that promises blazing fast speed and zero configuration bundling.

Parcel is a new module bundler for Javascript applications. It offers faster compilation times and zero configuration bundling. Webpack is a powerful tool. I know, webpack can’t be compared to Gulp…
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Re-imagining our JavaScript SDK – moltin – Medium

Re-imagining our JavaScript SDK

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#Reactjs #javascript

  • So, to make that easier for all our users, we released our first incarnation of the JavaScript SDK back in 2013.
  • Key problems we wanted to address immediately were: – Removal of CoffeeScriptFully testedAutomatic authenticationWith the overall objectives of: – Releasing a solid piece of work to build onMaintaining correct semver off a base versionFollow standard patterns to increase the overall support baseThe automated authentication was one of the bugbears of…
  • By following a standard pattern we’re able to release the JS SDK as a single piece of work that can enable functionality across huge swathes of JavaScript technology out of the box, including NodeJS, TVJS, and standard Javascript.
  • By re-envisioning the SDK we’re putting in place a solid foundation on which we can start building better functionality and longer term goals with our community of developers and our team within moltin.
  • As always, the moltin goal is to change how developers build commerce completely, and the JavaScript community and its developers are a huge part of that mission.

One of the primary reasons we started building moltin was to bring the huge potential of secure commerce to the frontend, to the JavaScript developer! Over the last couple of years we’ve seen the…
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Developing A React Native App with Expo – Exposition

Developing A #reactnative App with Expo

  • Developing A React Native App with ExpoAt Ducklings, Inc., we use Expo + React Native to develop applications for iOS/Android.
  • It comes with build and production environments, you can write React Native code using JS (no need for Xcode or Android Studio), and develop for both iOS and Android.
  • However, with Expo, it’s possible to replace just the JS bundle that determines the behavior of your application, reducing the amount of work you have to do; and, of course, iOS and Android get updated at the same time.
  • The specific steps are: – Acquire the push token on the application side – This token is issued by Expo for each device in a format like Save this on the server side.Send the push notification – On the server side, send the following via POST to the endpoint “to”:…
  • If you really need to a specific native module that’s not supported, you can detach from Expo and keep building in Xcode and Android Studio (though you then can’t take advantage of all the benefits we described above).

This post is cross-posted (and translated) from Takahiko Wada’s original post on the Ducklings Tech Blog. Thank you, Takahiko & team, for your work and for sharing your experience with us! Expo is a…
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Mern Stack Crud App Using create-react-app & React Redux Part 1.

Mern Stack Crud App Using create-react-app & React Redux Part 1.

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#Reactjs #Redux

  • js – import express from ‘express’; – import path from ‘path’; – import bodyParser from ‘body-parser’; – import logger from ‘morgan’; – import mongoose from ‘mongoose’; – import bb from ‘express-busboy’;// import routes – import todoRoutes from define our app using express – const app = express();// express-busboy to parse…
  • /h2′); – });// start the server – app.listen(port,() = { – console.log(`App Server Listening at ${port}`); – });The above code sets up a express app, with an /api route points to a Let’s create this express from ‘express’;//import controller file – import * as todoController from get an instance of…
  • get(todoController.getTodo) – default router;Create a controller file todo.server.controller.js in a new folder called controllers to handle the CRUD functionality at the mongoose from ‘mongoose’;//import models – import Todo from const getTodos = (req,res) = { – Todo.find().
  • So create a new directory in the express-server folder called models and then create another file in that called mongoose from ‘mongoose’;var Schema = mongoose.Schema({ – createdAt:{ – type: Date, – default: Date.now – }, – fullName: String, – todoText: String – });export default mongoose.model(‘Todo’, Schema);Even though Node.js supports many…
  • js – import express from ‘express’; – import path from ‘path’; – import bodyParser from ‘body-parser’; – import logger from ‘morgan’; – import mongoose from ‘mongoose’; – import SourceMapSupport from ‘source-map-support’;// import routes – import todoRoutes from define our app using express – const app = express();// “*”); – “Origin,…

The MERN (MongoDB, Express, ReactJs, Node.js) stack is arguably the most popular stack for any web application these days. Our application is a basic crud application tutorial that will help you get…
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