* Dateconst now = new Date();console.log("현재:", now.toString());console.log("년:", now.getFullYear());console.log("월:", now.getMonth() + 1);console.log("일:", now.getDate());const nowTime = now.getTime();const birthTime = birthday.getTime();const diffDays = Math.floor((nowTime - birthTime) / (1000 * 60 * 60 * 24));console.log(`태어난 지 ${diffDays}일 지났습니다.`); * Stringconst str1 = "안녕하세요 JavaScript";co..