jQuery and JavaScript: generate and read a QR Code

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Hello everybody!
today we are going to see something really interesting that someone in the past asked me via email.
We are going to generate a QR code using a jQuery plug in and then we are going to use a JavaScript library to read the very same QR code.
What do you think, is it interesting enough?

JavaScript: create an analogue clock with canvas

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There's an interesting example buried in the MDM HTML5 pages, where we can create an analogue clock with JavaScript and <canvas>.

There's not much to say about it. What is interesting for us, is the way the clock is actually drawn.