JS Date 日期（時間）轉換爲 字符串

1.日期 轉換 字符串 yyyy-MM-dd

dateToString: function(date){
  var year = date.getFullYear();
  var month =(date.getMonth() + 1).toString();
  var day = (date.getDate()).toString();
  if (month.length == 1) {
    month = "0" + month;
  }
  if (day.length == 1) {
    day = "0" + day;
  }
  var dateTime = year + "-" + month + "-" + day;
  return dateTime;
},

2.Date 轉換 字符串 yyyy-MM-dd HH:mm:ss

function dateTimeToString(date) {
    var y = date.getFullYear();
    var M = date.getMonth() + 1;
    var d = date.getDate();
    var H = date.getHours();
    var m = date.getMinutes();
    var s = date.getSeconds();
    return y + '-' + (M < 10 ? ('0' + M) : M) + '-' + (d < 10 ? ('0' + d) : d) + " " + (H < 10 ? ('0' + H) : H) + ":" + (m < 10 ? ('0' + m) : m) + ":" + (s < 10 ? ('0' + s) : s);
}

3.擴展Date格式化 yyyy-MM-dd HH:mm:ss.S

dateTimeToStringS:function (date, format) {
  if (date) {
    var o = {
      "M+": date.getMonth() + 1, //月份           
      "d+": date.getDate(), //日           
      "h+": date.getHours() % 12 == 0 ? 12 : date.getHours() % 12, //小時           
      "H+": date.getHours(), //小時           
      "m+": date.getMinutes(), //分           
      "s+": date.getSeconds(), //秒           
      "q+": Math.floor((date.getMonth() + 3) / 3), //季度           
      "S": date.getMilliseconds() //毫秒           
    };
    var week = {
      "0": "\u65e5",
      "1": "\u4e00",
      "2": "\u4e8c",
      "3": "\u4e09",
      "4": "\u56db",
      "5": "\u4e94",
      "6": "\u516d"
    };
    if (/(y+)/.test(format)) {
      format = format.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
    }
    if (/(E+)/.test(format)) {
      format = format.replace(RegExp.$1, ((RegExp.$1.length > 1) ? (RegExp.$1.length > 2 ? "\u661f\u671f" : "\u5468") : "") + week[date.getDay() + ""]);
    }
    for (var k in o) {
      if (new RegExp("(" + k + ")").test(format)) {
        format = format.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
      }
    }
    return format;
  }
},