JS 獲取當前日期時間 （如：2017-03-17 18:55:03 星期六）

function getNowDate() {
	var date    = new Date();
	var sign1   = "-";
	var sign2   = ":";
	var year    = date.getFullYear() // 年
	var month   = date.getMonth() + 1; // 月
	var day     = date.getDate(); // 日
	var hour    = date.getHours(); // 時
	var minutes = date.getMinutes(); // 分
	var seconds = date.getSeconds() //秒
	var weekArr = ['星期一', '星期二', '星期三', '星期四', '星期五', '星期六', '星期天'];
	var week    = weekArr[date.getDay()];

	// 給一位數數據前面加 “0”
	if (month >= 1 && month <= 9) {
		month = "0" + month;
	}
	if (day >= 0 && day <= 9) {
		day = "0" + day;
	}
	if (hour >= 0 && hour <= 9) {
		hour = "0" + hour;
	}
	if (minutes >= 0 && minutes <= 9) {
		minutes = "0" + minutes;
	}
	if (seconds >= 0 && seconds <= 9) {
		seconds = "0" + seconds;
	}

	var currentdate = year + sign1 + month + sign1 + day + " " + hour + sign2 + minutes + sign2 + seconds + " " + week;
	return currentdate;
}
console.log(getNowDate());