JavaScript实现字符串与日期的相互转换及日期的格式化_.docx
JavaScript实现字符串与日期的相互转换及日期的格式化_ 这篇文章主要介绍了JavaScript实现字符串与日期的相互转换及日期的格式化的方法,这里格式化用法的是正则表达式来替换日期后进行格式化,需要的伴侣可以参考下 字符串转日期、日期转字符串 / 2021-02-25 /* * 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(fullDate0, fullDate1-1, fullDate2, 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=2021-02-28 var cDate = _STAGE.stringToDate(dateValue); cDate.setDate(cDate.getDate()+1); currentDate = jAnXin.util.formatDate(cDate, "yyyy-MM-dd"); console.log(currentDate ); / 2021-03-01 正则替换日期并格式化日期 转数字型: ar ttDate = "2021年12月20日 14:20:20" ttDate = ttDate.replace(/0-9/mg, ).match(/.8/); alert(ttDate); 结果: 20211220 转日期型: var ttDate = "2021年12月20日 14:20:20" ttDate = ttDate.match(/d4.d1,2.d1,2/mg).toString(); ttDate = ttDate.replace(/0-9/mg, -); alert(ttDate); 结果: 2021-12-20 超级正则替换: var ttDate = "2021年12月20日 14:20:20" ttDate = ttDate.replace(/(d4).(d1,2).(d1,2).+/mg, $1-$2-$3); alert(ttDate); 结果: 2021-12-20 .