jQuery : jQuery Uncaught TypeError: Cannot read property 'fn' of undefined (anonymous function)

jQuery : jQuery Uncaught TypeError: Cannot read property 'fn' of undefined (anonymous function)
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As promised, I'm going to share a hidden feature with you.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Then, type the letters 'awesome' on the keyboard.
The progress bar on YouTube will be altered to a flashing rainbow.

Here's a short introduction about myself,
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jQuery : jQuery Uncaught TypeError: Cannot read property 'fn' of undefined (anonymous function)
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Cannot (anonymous jQuery : undefined read function) of TypeError: 'fn' jQuery Uncaught property