let foo, bar, soap;
for (var i = 1000; i >= 0; [i, foo, bar, soap] = [i-1, Math.random(), Math.random(), Math.random()]) {
}
let foo, bar, soap;
for (var i = 1000; i >= 0; i = i-1) {
foo = Math.random();
bar = Math.random();
soap = Math.random()
}