カンマ演算子を使って JavaScript の if 文を Python のように書く

for (let i = 0, j = 9; i <= 9; i++, j--) {
  console.log(`i=${i} j=${j}`);
}

const sayHello = () => console.log('Hello');
const sayMyFriend = () => console.log('MyFriend');

const greet1 = (myFriend) => {
  if (myFriend) {
    sayHello();
    sayMyFriend();
  } else {
    sayHello();
  }
};

const greet2 = (myFriend) => (myFriend ? (sayHello(), sayMyFriend()) : sayHello());

if x < 42:
  print('Less!!')
  print('The answer is greater than you put in.')
elif x == 42:
  print('You got it!!')
  print('Yes, the answer is 42.')
else:
  print('More!!')
  print('The answer is smaller than you put in.')

if (x < 42)
  console.log('Less!!'),
  console.log('The answer is greater than you put in.');
else if (x === 42)
  console.log('You got it!!'),
  console.log('Yes, the answer is 42.');
else
  console.log('More!!'),
  console.log('The answer is smaller than you put in.');