Why does {. . . .0} evaluate to {}?

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Category:Languages

I just found {....0} in friend's code. Evaluating it in console returns {} (empty object).

Why is that? What is the meaning of 4 dots in JavaScript?

Edit: IDK why, but the title of my question is edited, instead of 4dots it shows just 3, Edit2: got it working by adding space in between the dots

 


Four dots actually have no meaning. ... is the spread operator, and .0 is short for 0.0.

Spreading 0 (or any number) yields an empty object, therefore {}.

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