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React Component Lifecycle
A react component has certain lifecycle methods in which we can insert our own code and execute it at a particular moment during the lifecycle of the component. A react component can go through different sets of lifecycle methods depending upon in which phase the component is. These Phases are Mounting, Updating, and Unmounting.
Mounting
Following is the order of execution for the methods, when the component is created and inserted into the real DOM:
- constructor()
- getDerivedStateFromProps()
- render()
- componentDidMount()
Note: When we talk about mounting, we’re talking about the process of converting the virtual components into actual DOM elements that are placed in the DOM by React.
Flow diagram for mounting phase
#react #reactjs #lifecycle #react components
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1598839687
How native is React Native? | React Native vs Native App Development
If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?
In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.
A brief introduction to React Native
Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.
React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.
Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.
Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.
The popularity of React Native comes from its advantages. Some of its advantages are as follows:
- Performance: It delivers optimal performance.
- Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
- UI design: React Native enables you to design simple and responsive UI for your mobile app.
- 3rd party plugins: This framework supports 3rd party plugins.
- Developer community: A vibrant community of developers support React Native.
Why React Native is fundamentally different from earlier hybrid frameworks
Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.
React Native is very close to native. Consider the following aspects as described on the React Native website:
- Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
- Near-native user experience: React Native provides several native components, and these are platform agnostic.
- The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.
Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.
#android app #frontend #ios app #mobile app development #benefits of react native #is react native good for mobile app development #native vs #pros and cons of react native #react mobile development #react native development #react native experience #react native framework #react native ios vs android #react native pros and cons #react native vs android #react native vs native #react native vs native performance #react vs native #why react native #why use react native
1613535629
React Component Lifecycle
A react component has certain lifecycle methods in which we can insert our own code and execute it at a particular moment during the lifecycle of the component. A react component can go through different sets of lifecycle methods depending upon in which phase the component is. These Phases are Mounting, Updating, and Unmounting.
Mounting
Following is the order of execution for the methods, when the component is created and inserted into the real DOM:
- constructor()
- getDerivedStateFromProps()
- render()
- componentDidMount()
Note: When we talk about mounting, we’re talking about the process of converting the virtual components into actual DOM elements that are placed in the DOM by React.
Flow diagram for mounting phase
#react #reactjs #lifecycle #react components
1599801387
A Beginner’s Guide to React
It’s nearly the end of 2019, and you think you might finally be ready to get started learning ReactJS. You hear it’s become the most popular front end JavaScript framework. You sit down at your computer, and are ready to give it a go. Starting off, you probably jump straight in with Facebook’s official React tutorial. After that maybe another tutorial on medium. You do some reading here and there, and if you are like me, you end up pretty confused. You hear terms like “props”, “state”, “virtual dom”, “ES6”, “babel”, “webpack”, “higher-order components”, “Redux”, and much more. Soon you realise that learning React is not as easy as you once imagined and either quit or confusedly persevere on.
Does this sound like you? Because this is exactly how I felt when I started learning React. All I wanted to do was set up a simple React app, and I was getting very confused. I thought React had a fairly difficult learning curve, and I was feeling pretty overwhelmed.
I soon realised that React was fairly easy to learn, but the way I went about learning it was difficult. The problem was I didn’t know how to learn it. Firstly, I was relatively new to the world of front end development and I didn’t know what I was doing. I was somewhat familiar with HTML and only used JavaScript a few times. That certainly did not help. There were technologies and information that I should have spent a little more time learning prior to React, that would have lowered the learning curve tremendously.
This is what I would have liked to have known before I began writing a single line of React code:
Prerequisites
First, let’s nail out the basics. Before you start diving into React, you should probably have at least a little experience with each of the following:
- HTML
- CSS
- ES6 JavaScript
- NodeJS + NPM
If you are familiar with each of the above, then learning React is going to be a lot easier for you. React is big on JavaScript and HTML.
What is React
React is a JavaScript library built in 2013 by the Facebook development team. React wanted to make user interfaces more modular (or reusable) and easier to maintain. According to React’s website, it is used to “Build encapsulated components that manage their own state, then compose them to make complex UIs.”
Understand the Basic
React has 4 ideas that are key to getting started learning with React.
1.Components
React apps have component based architectures. Conceptually, components are more like JavaScript Functions.They accept inputs(called “props”) and return React elements describing what should appear on screen. Probably a title, an author’s name, the date published, some text, some photos, like buttons, share buttons, etc. If you were building this blog in React, each of these would most likely be a component.
If you create a component for a share button, you can reuse that component to build other share buttons, or reuse it across multiple different kinds of articles. This is the idea with React. You are building components that then can be used and reused to build bigger components.
2. Props
Props is short for properties. Properties are how you pass information unidirectionally from parent to child components. I like to think of them as property attributes or parameters, since it is conceptually similar to passing arguments into a function, and syntactically similar to HTML attributes. Look at the example used previously. If this were a React component, the props would be what you are passing in as “src”, “alt”, “height”, and “width”. You can also pass in callback functions for the child to execute such as “onClick”.
3. State
Many React components will be stateful components. State is exactly what it sounds like. It’s the internal state of your component. Think of a checkbox on a web page. It can either be checked or unchecked. When the user clicks on the checkbox, it will check the box if it is unchecked, and when the user clicks it again it will uncheck the box. The checkbox is an example of a stateful component. In this example, the internal state of the checkbox would be a boolean that would either be checked true or checked false.
While many components have state, some are stateless. Just because lots of components have state doesn’t mean that every component needs to be stateful. Sometimes it makes sense to omit state from a component. Think of an image html tag.
**<img src=”smiley.gif” alt=”Smiley face” height=”42" width=”42">**
If this image tag would be an example of a stateless component. You are passing in parameters, but the image tag itself does not have an internal state that it needs to manage itself.
4. React lifecycle
React is much easier to understand if you have a basic idea behind the React component lifecycle. The React lifecycle describes when and how a component should mount, render, update, and unmount in the DOM. React has lifecycle hooks (React component methods) that help you manage state, props, and work with the lifecycle flow.
**React component lifecycle has three categories **— Mounting, Updating and Unmounting.
- The render_() _is the most used lifecycle method.
- It is a pure function.
- You cannot set state in render()
2. The componentDidMount() happens as soon as your component is mounted.
- You can set state here but with caution.
3. The componentDidUpdate_() _happens as soon as the updating happens.
- You can set state here but with caution.
4. The componentWillUnmount_() _happens just before the component unmounts and is destroyed.
- This is a good place to cleanup all the data.
- You cannot set state here.
5. The shouldComponentUpdate_() _can be used rarely.
- It can be called if you need to tell React not to re-render for a certain state or prop change.
- This needs to be used with caution only for certain performance optimizations.
6.The two new lifecycle methods are getDerivedStateFromProps() and getSnapshotBeforeUpdate().
- They need to be used only occasionally.
- Not many examples are out there for these two methods and they are still being discussed and will have more references in the future.
Note: You can read more about React’s lifecycle here
These are only the basics to get started.
#react-for-beginner #react-lifecycle #react #react-components #ui
1615544450
How to Select and Hire the Best React JS and React Native Developers?
Since March 2020 reached 556 million monthly downloads have increased, It shows that React JS has been steadily growing. React.js also provides a desirable amount of pliancy and efficiency for developing innovative solutions with interactive user interfaces. It’s no surprise that an increasing number of businesses are adopting this technology. How do you select and recruit React.js developers who will propel your project forward? How much does a React developer make? We’ll bring you here all the details you need.
What is React.js?
Facebook built and maintains React.js, an open-source JavaScript library for designing development tools. React.js is used to create single-page applications (SPAs) that can be used in conjunction with React Native to develop native cross-platform apps.
React vs React Native
- React Native is a platform that uses a collection of mobile-specific components provided by the React kit, while React.js is a JavaScript-based library.
- React.js and React Native have similar syntax and workflows, but their implementation is quite different.
- React Native is designed to create native mobile apps that are distinct from those created in Objective-C or Java. React, on the other hand, can be used to develop web apps, hybrid and mobile & desktop applications.
- React Native, in essence, takes the same conceptual UI cornerstones as standard iOS and Android apps and assembles them using React.js syntax to create a rich mobile experience.
What is the Average React Developer Salary?
In the United States, the average React developer salary is $94,205 a year, or $30-$48 per hour, This is one of the highest among JavaScript developers. The starting salary for junior React.js developers is $60,510 per year, rising to $112,480 for senior roles.
* React.js Developer Salary by Country
- United States- $120,000
- Canada - $110,000
- United Kingdom - $71,820
- The Netherlands $49,095
- Spain - $35,423.00
- France - $44,284
- Ukraine - $28,990
- India - $9,843
- Sweden - $55,173
- Singapore - $43,801
In context of software developer wage rates, the United States continues to lead. In high-tech cities like San Francisco and New York, average React developer salaries will hit $98K and $114per year, overall.
However, the need for React.js and React Native developer is outpacing local labour markets. As a result, many businesses have difficulty locating and recruiting them locally.
It’s no surprise that for US and European companies looking for professional and budget engineers, offshore regions like India are becoming especially interesting. This area has a large number of app development companies, a good rate with quality, and a good pool of React.js front-end developers.
As per Linkedin, the country’s IT industry employs over a million React specialists. Furthermore, for the same or less money than hiring a React.js programmer locally, you may recruit someone with much expertise and a broader technical stack.
How to Hire React.js Developers?
- Conduct thorough candidate research, including portfolios and areas of expertise.
- Before you sit down with your interviewing panel, do some homework.
- Examine the final outcome and hire the ideal candidate.
Why is React.js Popular?
React is a very strong framework. React.js makes use of a powerful synchronization method known as Virtual DOM, which compares the current page architecture to the expected page architecture and updates the appropriate components as long as the user input.
React is scalable. it utilises a single language, For server-client side, and mobile platform.
React is steady.React.js is completely adaptable, which means it seldom, if ever, updates the user interface. This enables legacy projects to be updated to the most new edition of React.js without having to change the codebase or make a few small changes.
React is adaptable. It can be conveniently paired with various state administrators (e.g., Redux, Flux, Alt or Reflux) and can be used to implement a number of architectural patterns.
Is there a market for React.js programmers?
The need for React.js developers is rising at an unparalleled rate. React.js is currently used by over one million websites around the world. React is used by Fortune 400+ businesses and popular companies such as Facebook, Twitter, Glassdoor and Cloudflare.
Final thoughts:
As you’ve seen, locating and Hire React js Developer and Hire React Native developer is a difficult challenge. You will have less challenges selecting the correct fit for your projects if you identify growing offshore locations (e.g. India) and take into consideration the details above.
If you want to make this process easier, You can visit our website for more, or else to write a email, we’ll help you to finding top rated React.js and React Native developers easier and with strives to create this operation
#hire-react-js-developer #hire-react-native-developer #react #react-native #react-js #hire-react-js-programmer
1651604400
React Starter Kit: Build Web Apps with React, Relay and GraphQL.
React Starter Kit — "isomorphic" web app boilerplate 
React Starter Kit is an opinionated boilerplate for web development built on top of Node.js, Express, GraphQL and React, containing modern web development tools such as Webpack, Babel and Browsersync. Helping you to stay productive following the best practices. A solid starting point for both professionals and newcomers to the industry.
See getting started guide, demo, docs, roadmap | Join #react-starter-kit chat room on Gitter | Visit our sponsors:
Getting Started
- Follow the getting started guide to download and run the project (Node.js >= 8.16.2)
- Check the code recipes used in this boilerplate, or share yours
Customization
The master branch of React Starter Kit doesn't include a Flux implementation or any other advanced integrations. Nevertheless, we have some integrations available to you in feature branches that you can use either as a reference or merge into your project:
- feature/redux (PR) — isomorphic Redux by Pavel Lang (see how to integrate Redux) (based on
master) - feature/apollo (PR) — isomorphic Apollo Client by Pavel Lang (see Tracking PR #1147) (based on
feature/redux) - feature/react-intl (PR) — isomorphic Redux and React Intl by Pavel Lang (see how to integrate React Intl) (based on
feature/apollo) - feature/apollo-pure (PR) — Apollo devtools and TypeScript integration by piglovesyou (based on
master)
You can see status of most reasonable merge combination as PRs labeled as TRACKING
If you think that any of these features should be on master, or vice versa, some features should removed from the master branch, please let us know. We love your feedback!
Comparison
React Starter Kit
| React Static Boilerplate
| ASP.NET Core Starter Kit
| |
|---|---|---|---|
| App type | Isomorphic (universal) | Single-page application | Single-page application |
| Frontend | |||
| Language | JavaScript (ES2015+, JSX) | JavaScript (ES2015+, JSX) | JavaScript (ES2015+, JSX) |
| Libraries | React, History, Universal Router | React, History, Redux | React, History, Redux |
| Routes | Imperative (functional) | Declarative | Declarative, cross-stack |
| Backend | |||
| Language | JavaScript (ES2015+, JSX) | n/a | C#, F# |
| Libraries | Node.js, Express, Sequelize, GraphQL | n/a | ASP.NET Core, EF Core, ASP.NET Identity |
| SSR | Yes | n/a | n/a |
| Data API | GraphQL | n/a | Web API |
Backers
♥ React Starter Kit? Help us keep it alive by donating funds to cover project expenses via OpenCollective or Bountysource!
How to Contribute
Anyone and everyone is welcome to contribute to this project. The best way to start is by checking our open issues, submit a new issue or feature request, participate in discussions, upvote or downvote the issues you like or dislike, send pull requests.
Learn More
- Getting Started with React.js
- Getting Started with GraphQL and Relay
- React.js Questions on StackOverflow
- React.js Discussion Board
- Flux Architecture for Building User Interfaces
- Enzyme — JavaScript Testing utilities for React
- Flow — A static type checker for JavaScript
- The Future of React
- Learn ES6, ES6 Features
Related Projects
- GraphQL Starter Kit — Boilerplate for building data APIs with Node.js, JavaScript (via Babel) and GraphQL
- Membership Database — SQL schema boilerplate for user accounts, profiles, roles, and auth claims
- Babel Starter Kit — Boilerplate for authoring JavaScript/React.js libraries
Support
- #react-starter-kit on Stack Overflow — Questions and answers
- #react-starter-kit on Gitter — Watch announcements, share ideas and feedback
- GitHub issues, or Scrum board — File issues, send feature requests
- appear.in/react — Open hours! Exchange ideas and experiences (React, GraphQL, startups and pet projects)
- @koistya on Codementor, or Skype — Private consulting
License
Copyright © 2014-present Kriasoft, LLC. This source code is licensed under the MIT license found in the LICENSE.txt file. The documentation to the project is licensed under the CC BY-SA 4.0 license.
Author: kriasoft
Source Code: https://github.com/kriasoft/react-starter-kit
License: MIT License