React for Beginners #8 - Styling Components

Welcome back to another React tutorial! In this video, I’ll be showing you how to style the website we’ve been working on. There are a bunch of different methods for styling in react that I’ll go over.

⭐️ Timestamps ⭐️

• 00:00 | Introduction
• 01:30 | Global Style Sheets
• 06:43 | CSS Modules
• 12:51 | Styled-Components Library
• 19:54 | In-Line Styles
• 21:15 | Styling with Bootstrap

#react #javascript #web-development

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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.

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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.

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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.

1. 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

 Component Life Cycle in React

Every component in React goes through a lifecycle of events. You can think is of going through a cycle of birth, growth, and death the same as the picture below.

The phases are:

• Initialization — Starting the journey of your component
• Mounting — Birth of your component
• Update — Growth of your component
• Unmount — Death of your component

1. Initialization

This is the phase in which the component is going to start its journey. The developer has to define the props and initial state of the component. This is usually done inside the constructor method (see below to understand the initialization phase better).

#react #react-lifecycle-method #react-course #react-for-beginner #react-js-tutorials

Implementing a dark theme toggle with react-redux and styled-components

To keep things simple and concise, we’ll start fresh with npx create-react-app dark-toggle . While we’re in our command line, let’s get the npm packages out of the way as well:
npm install styled-components styled-theming redux react-redux
styled-components: we’ll use this library to create isolated components that encapsulate their own styling
styled-theming: this library offers a very clean API to work with multiple themes in your styled components
redux and react-redux will do the heavy lifting regarding state management

#styled-components #react #react-hook #dark-theme #redux #react-native

What are hooks in React JS? - INFO AT ONE

In this article, you will learn what are hooks in React JS? and when to use react hooks? React JS is developed by Facebook in the year 2013. There are many students and the new developers who have confusion between react and hooks in react. Well, it is not different, react is a programming language and hooks is a function which is used in react programming language.
Read More:- https://infoatone.com/what-are-hooks-in-react-js/

#react #hooks in react #react hooks example #react js projects for beginners #what are hooks in react js? #when to use react hooks