JavaScript實現字串與日期的互相轉換及日期的格式化_javascript技巧

字串轉日期、日期轉字串

// 2014-02-25  /**    * 字串轉時間（yyyy-MM-dd HH:mm:ss）    * result （分鐘）    */    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 格式化樣式,例如yyyy-MM-dd HH:mm:ss E      * @return 格式化後的金額      */     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 

正則替換日期並格式化日期

轉數字型：

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

結果：

20131220 

 轉日期型：

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); 

結果：

2013-12-20 

 超級正則替換：

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); 

結果：

2013-12-20