Can you make a
alert show its message RTL and right-aligned?
Programmatically no, but the user's culture setting for their machine should determine which way it's presented, at least in all current browsers. I'm not aware of a comprehensive "who supports it" list though.
Try adding this at the beginning of your message: "\u200f\u200f"
If you have control over the
<html>tag, set direction to RTL like this
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