JavaScript实现字符串与日期的互相转换及日期的格式化

字符串转日期、日期转字符串

// 2014-02-25 

/**
   * 字符串转时间（yyyy-MM-dd HH:mm:ss）
   * result （分钟）
   */
  stringToDate : function(fDate){
    var fullDate = fDate.split("-");  

    return new Date(fullDate[0], fullDate[1]-1, fullDate[2], 0, 0, 0);
  } 

/**
     * 格式化日期
     * @param date 日期
     * @param format 格式化样式,例如yyyy-MM-dd HH:mm:ss E
     * @return 格式化后的金额
     */
    formatDate : function (date, format) {
      var v = "";
      if (typeof date == "string" || typeof date != "object") {
        return;
      }
      var year  = date.getFullYear();
      var month  = date.getMonth()+1;
      var day   = date.getDate();
      var hour  = date.getHours();
      var minute = date.getMinutes();
      var second = date.getSeconds();
      var weekDay = date.getDay();
      var ms   = date.getMilliseconds();
      var weekDayString = ""; 

      if (weekDay == 1) {
        weekDayString = "星期一";
      } else if (weekDay == 2) {
        weekDayString = "星期二";
      } else if (weekDay == 3) {
        weekDayString = "星期三";
      } else if (weekDay == 4) {
        weekDayString = "星期四";
      } else if (weekDay == 5) {
        weekDayString = "星期五";
      } else if (weekDay == 6) {
        weekDayString = "星期六";
      } else if (weekDay == 7) {
        weekDayString = "星期日";
      } 

      v = format;
      //Year
      v = v.replace(/yyyy/g, year);
      v = v.replace(/YYYY/g, year);
      v = v.replace(/yy/g, (year+"").substring(2,4));
      v = v.replace(/YY/g, (year+"").substring(2,4)); 

      //Month
      var monthStr = ("0"+month);
      v = v.replace(/MM/g, monthStr.substring(monthStr.length-2)); 

      //Day
      var dayStr = ("0"+day);
      v = v.replace(/dd/g, dayStr.substring(dayStr.length-2)); 

      //hour
      var hourStr = ("0"+hour);
      v = v.replace(/HH/g, hourStr.substring(hourStr.length-2));
      v = v.replace(/hh/g, hourStr.substring(hourStr.length-2)); 

      //minute
      var minuteStr = ("0"+minute);
      v = v.replace(/mm/g, minuteStr.substring(minuteStr.length-2)); 

      //Millisecond
      v = v.replace(/sss/g, ms);
      v = v.replace(/SSS/g, ms); 

      //second
      var secondStr = ("0"+second);
      v = v.replace(/ss/g, secondStr.substring(secondStr.length-2));
      v = v.replace(/SS/g, secondStr.substring(secondStr.length-2)); 

      //weekDay
      v = v.replace(/E/g, weekDayString);
      return v;
    } 

// dateValue=2014-02-28
var cDate = _STAGE.stringToDate(dateValue);
cDate.setDate(cDate.getDate()+1);
currentDate = jAnXin.util.formatDate(cDate, "yyyy-MM-dd"); 

console.log(currentDate ); // 2014-03-01

正则替换日期并格式化日期

转数字型：

ar ttDate = "2013年12月20日 14:20:20";
ttDate = ttDate.replace(/[^0-9]/mg, '').match(/.{8}/);
alert(ttDate);

结果：

20131220 

转日期型：

var ttDate = "2013年12月20日 14:20:20";
ttDate = ttDate.match(/\d{4}.\d{1,2}.\d{1,2}/mg).toString();
ttDate = ttDate.replace(/[^0-9]/mg, '-');
alert(ttDate);

结果：

2013-12-20

超级正则替换：

var ttDate = "2013年12月20日 14:20:20";  

ttDate = ttDate.replace(/(\d{4}).(\d{1,2}).(\d{1,2}).+/mg, '$1-$2-$3');
alert(ttDate);

结果：

2013-12-20