How to Generate QR Code using JavaScript

Codecademy Team

Two ways to generate QR codes in JavaScript: using a library called QRCode.js and a third-party library called QRious.

What Are QR Codes?

QR codes (is short for “Quick Response code”. These codes are used to store information. The information is stored in the pixels of a square-shaped grid. QR codes are the type of barcodes that can be read by image-oriented digital devices, such as a digital camera. Almost every modern smartphone has a built-in QR reader that we use to do payments, open applications, download apps, for E-commerce, and so on.

QR code is a graphic consisting of black dots and squares. The QR code is created to store the information that can be read by a smartphone device and can be translated to some meaningful. So, it is an encoded piece of data.

Use of QR codes

QR codes are used to hide information from humans. It is used with many applications especially for doing payments. These codes are like barcodes and are only machine-readable. The digital device can read the information via scanning the QR code.

In this article, we’ll go over two ways to generate QR codes in JavaScript: using a library called QRCode.js and a third-party library called QRious.

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