Generating QR Codes with React-qr-code

In this article, we’ll explore the react-qr-code library, a powerful tool for generating QR codes in your React applications. Whether you’re building a web application or a mobile app with React Native, this library provides a simple and flexible way to add QR code functionality to your project.

Installation

To get started, you’ll need to install the react-qr-code library using npm or yarn:

npm i react-qr-code

When using this library with React Native, you’ll also need to install react-native-svg:

npm i react-native-svg
cd ios && pod install

Basic Usage

Let’s start with a simple example of generating a QR code. We’ll use the QRCode component from the library and pass in a value to generate the QR code:

import React from "react";
import ReactDOM from "react-dom";
import QRCode from "react-qr-code";

ReactDOM.render(<QRCode value="hey" />, document.getElementById("Container"));

This will render a QR code with the value “hey” in the container with the id “Container”.

Advanced Usage

Now, let’s take a look at some more advanced usage examples. For instance, you can customize the appearance of the QR code by setting the bgColor and fgColor props:

import React from "react";
import ReactDOM from "react-dom";
import QRCode from "react-qr-code";

ReactDOM.render(
  <QRCode
    value="hey"
    bgColor="#FF0000"
    fgColor="#000000"
  />,
  document.getElementById("Container")
);

This will render a QR code with a red background and black foreground.

You can also set the level prop to specify the error correction level of the QR code:

import React from "react";
import ReactDOM from "react-dom";
import QRCode from "react-qr-code";

ReactDOM.render(
  <QRCode
    value="hey"
    level="H"
  />,
  document.getElementById("Container")
);

This will render a QR code with a high error correction level.

Conclusion

In this article, we’ve explored the react-qr-code library and its basic and advanced usage examples. Whether you’re building a web application or a mobile app with React Native, this library provides a simple and flexible way to add QR code functionality to your project. With its customizable appearance and error correction options, you can create QR codes that meet your specific needs.