Bitcoin jQuery Payment Widget

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IntroductionThis article describes a jQuery widget for making payments using Bitcoin.Paying with BitcoinSo what exactly is needed to be able to pay with Bitcoin?Unlike the other traditional payment systems, Bitcoin requires each transaction to be presigned by a secret key which is stored in payer's wallet.This secret key can't be exposed to the public and that's why the only secure way to pay with Bitcoin is to initiate a payment from a payer's wallet using the address and amount provided by merchant.Payer scans this information from widget in format of QR code. After information was scanned and payment initiated, the payer should notify the widget to start monitoring for transactions.After widget receives the transaction from Bitcoin network, payment is considered successful.Auto UpdateBitcoin exchange rate changes very frequently and is currently very unpredictable.That's why the address and amount of the payment (in format of QR code) should constantly auto update and reflect the m…