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Comment by kamyarg | Hacker News Reader

Do you mean

    true ? console.log("foo") : console.log("bar")

It’s more than simple ternary, for example: `response?.data?.users?[0]`

To get the first user from a server response would be significantly longer if you wrote three nested ternary operators.

  x ?: y

is shorthand for

  x != null ? x : y

In JavaScript you can simply use the logical or operator

x || y

This is not equivalent. It will result in y if x is any falsy value (like false, empty string, or 0), not just if x is nullish.

In which languages does ?: not work that way?

For example in PHP, it works exactly like you describe.

I think that’s exactly what the nullish ?? Operator is.

You can write x ?? y

Which is x !== null and x != undefined ? x : y

Kotlin.

Ah, thanks for the clarification. Did not know it is supported in some languages.