JS獲取當前時間的年、月、日、時間

 function showtime() {

            var date = new Date();

            var year = date.getFullYear();

            var month = date.getMonth() + 1;

            var day = date.getDate();

            var day = date.getDate();

            var hours = date.getHours();

            var minutes = date.getMinutes();

            var seconds = date.getSeconds();

            console.log(`${day}`)

            if (day == 0) {

                day == '日';

            }

            if (seconds < 10) {

                seconds = "0" + seconds;

            }

            if (minutes < 10) {

                minutes = "0" + minutes;

            }

            if (hours < 10) {

                hours = "0" + hours;

            }

            var time = year + "/" + month + "/" + day + " " + hours + ":" + minutes + ":" + seconds;

            var o = document.getElementById("box");

            o.innerHTML = time;

            console.log(time, '.....')

            setTimeout(showtime, 1000)

        }

        showtime();