HTML : Javascript / Jquery check if id already exists

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India Hey Delphi
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HTML : Javascript / Jquery check if id already exists
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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, Ensure that the video is playing before proceeding.
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You will see a flashing rainbow instead of a regular progress bar on YouTube.

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HTML : Javascript / Jquery check if id already exists
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if exists / Jquery : check Javascript id HTML already



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