Vegard  Sandnes

Vegard Sandnes

1567737901

Using Radio Button in React

Today In this React tutorial, we will explore how to work with Radio buttons in React app. Radio buttons are HTML elements and help the user to choose one option among two or more than two options. In this tutorial, we will learn how to use Radio buttons in React app. Using radio buttons in React is a little bit different than we use in regular HTML. However, we will learn the effortless way to integrate Radio buttons in React.

React Radio Button Example

In this React radio buttons tutorial, we are going to create a basic form in React component using render() method. This form will have five color options, among which a user can choose his favorite color. When a user clicks on the submit button, the radio button state will change.

Basic React App Set Up

Let’s start by installing and setting up the basic React app to show the radio buttons example.

npx create-react-app react-radio-buttons

Enter inside the `react-radio-buttons` project.

cd react-radio-buttons

Run the command to start the React app:

npm start

Define React Radio Button State

Firstly, we will set the radio buttons state. This Radio button state is being referred to as the user’s selection. We set defined the color variable in state and assign the empty (‘ ‘) value in it because the user will choose the color once the form is ready.

class App extends Component {

constructor() {
super();

this.state = {
  color: ''
};

}

}

Build React Form with React Render Method

In this step, we will define the HTML form with radio buttons along with color values inside the render() method. This method will render 5 Radio buttons wrapped inside the Unordered Lists.

 render() {
return (
<div className=“App”>
<form onSubmit={this.onSubmit}>
<strong>Select Color:</strong>

      &lt;ul&gt;
        &lt;li&gt;
          &lt;label&gt;
            &lt;input
              type="radio"
              value="red"
              checked={this.state.color === "red"}
              onChange={this.onRadioChange}
            /&gt;
            &lt;span&gt;Red&lt;/span&gt;
          &lt;/label&gt;
        &lt;/li&gt;

        &lt;li&gt;
          &lt;label&gt;
            &lt;input
              type="radio"
              value="green"
              checked={this.state.color === "green"}
              onChange={this.onRadioChange}
            /&gt;
            &lt;span&gt;Green&lt;/span&gt;
          &lt;/label&gt;
        &lt;/li&gt;

        &lt;li&gt;
          &lt;label&gt;
            &lt;input
              type="radio"
              value="blue"
              checked={this.state.color === "blue"}
              onChange={this.onRadioChange}
            /&gt;
            &lt;span&gt;Blue&lt;/span&gt;
          &lt;/label&gt;
        &lt;/li&gt;

        &lt;li&gt;
          &lt;label&gt;
            &lt;input
              type="radio"
              value="orange"
              checked={this.state.color === "orange"}
              onChange={this.onRadioChange}
            /&gt;
            &lt;span&gt;Ornage&lt;/span&gt;
          &lt;/label&gt;
        &lt;/li&gt;

        &lt;li&gt;
          &lt;label&gt;
            &lt;input
              type="radio"
              value="purple"
              checked={this.state.color === "purple"}
              onChange={this.onRadioChange}
            /&gt;
            &lt;span&gt;Purple&lt;/span&gt;
          &lt;/label&gt;
        &lt;/li&gt;
      &lt;/ul&gt;

      &lt;button type="submit"&gt;Choose Color&lt;/button&gt;
    &lt;/form&gt;
  &lt;/div&gt;
);

}

Let us understand what we did in the form. We defined color values in every radio button along with two properties checked and onChange.

The checked prop in our form is managing the selection of a radio button based on the radio button’s color state.

We are validating every radio buttons state with its respective value. When the value is checked, it will be set to true, and the radio button is considered to be selected. If the value is false, then the radio button will be in the unselected state

How is it working?

Well, when a user clicks on any of the radio buttons from the defined group. Then we are updating the state via color variable using the onChange event handler.

Lastly, we declared the onSubmit event handler and attached with the onSubmit method to the main form. So when the user clicks on the submit button, then the radio buttons value gets updated.

Radio Button Selected State in React

We define the value of a Radio button with the state variable. It sets the selected value of a Radio button in React.

class App extends Component {

constructor() {
super();

this.state = {
  color: 'green'
};

}

}

It will look something like this in your browser:

Include Event Handler in React Form

In this step, we will include the event handler. This will set and update the sate of Radio button when a user clicks on the radio button.

  onRadioChange = (e) => {
this.setState({
color: e.target.value
});
}

The above method will update the color value of a Radio button when change by the user.

The Final Touch

In this final step we will define the onSubmit event handler to the form, this event will trigger when a user submits the form.

Use the event.preventDefault() method, it helps in fixes the page redirecting issue when a user clicks on the submit button.

import React, { Component } from ‘react’;
import ‘…/node_modules/bootstrap/dist/css/bootstrap.min.css’;

class App extends Component {

constructor() {
super();

this.state = {
  color: 'green'
};

this.onRadioChange = this.onRadioChange.bind(this);
this.onSubmit = this.onSubmit.bind(this);

}

onRadioChange = (e) => {
this.setState({
color: e.target.value
});
}

onSubmit = (e) => {
e.preventDefault();
console.log(this.state);
}

render() {
return (
<div className=“App”>
<form onSubmit={this.onSubmit}>
<strong>Select Color:</strong>

      &lt;ul&gt;
        &lt;li&gt;
          &lt;label&gt;
            &lt;input
              type="radio"
              value="red"
              checked={this.state.color === "red"}
              onChange={this.onRadioChange}
            /&gt;
            &lt;span&gt;Red&lt;/span&gt;
          &lt;/label&gt;
        &lt;/li&gt;

        &lt;li&gt;
          &lt;label&gt;
            &lt;input
              type="radio"
              value="green"
              checked={this.state.color === "green"}
              onChange={this.onRadioChange}
            /&gt;
            &lt;span&gt;Green&lt;/span&gt;
          &lt;/label&gt;
        &lt;/li&gt;

        &lt;li&gt;
          &lt;label&gt;
            &lt;input
              type="radio"
              value="blue"
              checked={this.state.color === "blue"}
              onChange={this.onRadioChange}
            /&gt;
            &lt;span&gt;Blue&lt;/span&gt;
          &lt;/label&gt;
        &lt;/li&gt;

        &lt;li&gt;
          &lt;label&gt;
            &lt;input
              type="radio"
              value="orange"
              checked={this.state.color === "orange"}
              onChange={this.onRadioChange}
            /&gt;
            &lt;span&gt;Ornage&lt;/span&gt;
          &lt;/label&gt;
        &lt;/li&gt;

        &lt;li&gt;
          &lt;label&gt;
            &lt;input
              type="radio"
              value="purple"
              checked={this.state.color === "purple"}
              onChange={this.onRadioChange}
            /&gt;
            &lt;span&gt;Purple&lt;/span&gt;
          &lt;/label&gt;
        &lt;/li&gt;
      &lt;/ul&gt;

      &lt;button type="submit"&gt;Choose Color&lt;/button&gt;
    &lt;/form&gt;
  &lt;/div&gt;
);

}
}

export default App;

Following will be the output:

The React Radio button tutorial with example is completed.

Thanks For Visiting, Keep Visiting. If you liked this post, share it with all of your programming buddies!

Further reading

☞ React - The Complete Guide (incl Hooks, React Router, Redux)

☞ Modern React with Redux [2019 Update]

☞ Best 50 React Interview Questions for Frontend Developers in 2019

☞ Best JavaScript Frameworks, Libraries and Tools to Use in 2019

☞ React vs Angular vs Vue.js by Example

#reactjs #react-native #xcode #web-development

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Using Radio Button in React
Autumn  Blick

Autumn Blick

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

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

Mathew Rini

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

Aria Barnes

Aria Barnes

1627031571

React 18: Things You Need To Know About React JS Latest Version

The most awaited version of React 18 is finally out now. Its team has finally revealed the alpha version of React 18 and its plan, though the official launch is still pending. This time the team has tried something and released the plan first to know their user feedback because the last version of React 17 was not that much appreciated among developers.

According to Front-end Frameworks SurveyReact JS has ranked top in the list of most loved frameworks. Thus, the developer communities expect a bit higher from the framework, so they are less appreciative of the previous launch.
ReactJS stats.pngSo, this time React 18 will be a blast. For beginners, the team is working on a new approach. They have called a panel of experts, library authors, educators, and developers to take part in a working group. Initially, it will be a small group.

I am not a part of this release but following the team on their GitHub discussion group. After gathering the information from there, I can say that they have planned much better this time.

React 17 was not able to meet the developer's community. The focus was all primarily centered on making it easier to upgrade React itself. React 18 release will be the opposite. It has a lot of features for react developers.

Read more here: React 18: Things You Need To Know About React JS Latest Version

#hire react js developers #hire react js developers india #react developers india #react js developer #react developer #hire react developers

Aubrey  Price

Aubrey Price

1589722410

Build a simple React Native Pokemon app with React-Navigation

As we start learning new technologies we want to start building something or work on a simple project to get a better understanding of the technology. So, let’s build this simple app.
For this app, we will be using PokeApi to get our pokemon data, and also we will be using Hooks. I am using pokemondb for pokemon sprites. It’s just a personal preference you can use whatever you want.

#react-native #react-native-app #react-navigation #react-native-development #react