In this intro to my series on hooks, we cover the useState hook and how to use it.
Many of us have spent most of our time in React working with class components. They are comfy, and we understand them.
But the future is here, and hooks are the future. Hooks allow React developers to write cleaner, more concise code that is easier to debug.
“How do hooks even work?”
“But how do you use state? And how do you update it?”
I hear you. I hear you. I would be lying if I said hooks don’t come with a little, teensy bit of anxiety for a developer used to mostly writing class components, but there is no need to be afraid.
Hooks are your friends, and are here to help keep your code clean and concise. Let’s break down why hooks are useful as well as the first hook you’ll likely begin using — useState.
Functional components are functions that return JSX. On their own, functional components can’t do anything particularly interesting. Before React v16.8, functional components were mostly used to write presentational components that don’t need to handle any changes in state.
React v16.8 introduced hooks for functional components. Hooks allow functional components to use state in every way class components use them, but with less code.
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.
Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.
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:
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:
Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.
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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
You are a developer with previous experience using React, and you are comfortable using React class components. You’re so comfortable with class components to the point that switching to functional components sounds daunting. How are you going to set state? How can you access the react component lifecycle?
If this sounds like you, then this guide will help you begin transitioning your class components into functional ones. React hooks provide an ability to use state and lifecycle functions within functional components.
We will discuss two built in hooks: useState and useEffect.
A key difference between class and functional components is the fact that class components have a state while functional components are stateless. The useState hook allows us to add local state to a functional component. This hook holds onto a state between re-renders.
Let’s start by comparing the different components.
Class component showing how to use this.setState
#useeffect #react-hook #usestate #react-components #react
While coding this week, I had to convert one of my class components in React to a functional component.
Why would I need to do that? After all, the parent component sees the two types of components as identical. Sure, functional components can be shorter, require less boilerplate, and maybe even perform better. But that’s not why I needed to do it. I was using an npm package that had React hooks and hooks are for functional components only. React Hooks, added in React 16.8, allow functional components to manage state and replace lifecycle methods. To use the hook I needed I had to convert my class components to a functional.
Here are the steps I followed to change my class component to a functional component:
#react-hook-useeffect #useeffect #react-hook #react-hook-usestate #react
Validating inputs is very often required. For example, when you want to make sure two passwords inputs are the same, an email input should in fact be an email or that the input is not too long. This is can be easily done using React Hook From. In this article, I will show you how.
The most simple, yet very common, validation is to make sure that an input component contains input from the user. React Hook Form basic concept is to register input tags to the form by passing register() to the tag’s ref attribute. As we can see here:
#react-native #react #react-hook-form #react-hook