10 lines
376 B
Markdown
10 lines
376 B
Markdown
The answer: `1`, and then `undefined`.
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```js run
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alert( alert(1) && alert(2) );
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```
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The call to `alert` returns `undefined` (it just shows a message, so there's no meaningful return).
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Because of that, `&&` evaluates the left operand (outputs `1`), and immediately stops, because `undefined` is a falsy value. And `&&` looks for a falsy value and returns it, so it's done.
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