Display/Hide elements on specific day/time

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1

Example: I want to display a button to the live stream on Sunday and hide it for the rest of the week.

Thanks.

2

Use JS Date methods to get the current day and show the element only if today === 0 (0 is Sunday, 6 is Saturday).
See:

P.S. Your question has been asked before, and you can search the forum to see examples.