It is a very common to use in the apps for authentication. There is lot’s of Qr Code reader apps available over Internet. Some companies using QR code to proving extra security while user log-in on their panel. At that time of login you’ll see QR code image which you have to scan with your smart phone and you’ll see a secret pin which you need enter to access their panel.
So lets proceed to create the demo, We will use jquery.qrcode.js library to generate QR code, It is very simple and easy to use library for making QR Codes.
Now let's have a look on html part of our code:
Above we can see there is a text area to enter the text of which we want to create QR code below that dropdown to chooze the size of QR code and a button. At the bottom we have included the needed library.
The above code is responsible for generating QR code with the text & dimension choosed over the page.
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You can download complete code from here. Download Code