How to generate QR code using javascript?

In this video, we will learn how we can generate qr code using sinmple javascript and html. here in this we will take help of free api which can be used to create qr code as per our need.
link of qr api website -

end point used to create qr code in this video -

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[Vcode]

Well it looks good but I have a doubt...what if I want to convert multiple rows of data to create a QR code.

[ncrproduction]

I almost copy all the codes, but not working, it only generate the example qr