The thing you end with the semicolon is a expression. if (1) console.log(1), console.log(2), console.log(3); The comma breaks and returns the next value.

The thing you end with the semicolon is a expression. if (1) console.log(1), console.log(2), console.log(3); The comma breaks and returns the next value. var foo = 1, 2, 3; foo => 3 So correctly: Use this shorthand syntax to pick up only the next expression. :)