JavaScript : Javascript - return string between square brackets

JavaScript : Javascript - return string between square brackets
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On Google, Search for "hows tech developer connect"

So here is a secret hidden feature I promissed to tell you.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
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The progress bar on YouTube will be altered to a flashing rainbow.

A little intro about me,
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JavaScript : Javascript - return string between square brackets
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: square JavaScript - brackets return between string Javascript