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js日期格式化精髓总结

發(fā)布時間：2025/3/20 编程问答 28 豆豆

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1.js獲取日期的年月日，時分秒的方法

var myDate = new Date(); myDate.getYear(); //獲取當(dāng)前年份(2位) myDate.getFullYear(); //獲取完整的年份(4位,1970-????) myDate.getMonth(); //獲取當(dāng)前月份(0-11,0代表1月) myDate.getDate(); //獲取當(dāng)前日(1-31) myDate.getDay(); //獲取當(dāng)前星期X(0-6,0代表星期天) myDate.getTime(); //獲取當(dāng)前時間(從1970.1.1開始的毫秒數(shù)) myDate.getHours(); //獲取當(dāng)前小時數(shù)(0-23) myDate.getMinutes(); //獲取當(dāng)前分鐘數(shù)(0-59) myDate.getSeconds(); //獲取當(dāng)前秒數(shù)(0-59) myDate.getMilliseconds(); //獲取當(dāng)前毫秒數(shù)(0-999) myDate.toLocaleDateString(); //獲取當(dāng)前日期 var mytime=myDate.toLocaleTimeString(); //獲取當(dāng)前時間 myDate.toLocaleString( ); //獲取日期與時間

2.日期時間腳本庫方法列表

Date.prototype.isLeapYear 判斷閏年 Date.prototype.Format 日期格式化 Date.prototype.DateAdd 日期計算 Date.prototype.DateDiff 比較日期差 Date.prototype.toString 日期轉(zhuǎn)字符串 Date.prototype.toArray 日期分割為數(shù)組 Date.prototype.DatePart 取日期的部分信息 Date.prototype.MaxDayOfDate 取日期所在月的最大天數(shù) Date.prototype.WeekNumOfYear 判斷日期所在年的第幾周 StringToDate 字符串轉(zhuǎn)日期型 IsValidDate 驗證日期有效性 CheckDateTime 完整日期時間檢查 daysBetween 日期天數(shù)差

3.js日期格式化

方法一：

// 對Date的擴(kuò)展，將 Date 轉(zhuǎn)化為指定格式的String // 月(M)、日(d)、小時(h)、分(m)、秒(s)、季度(q) 可以用 1-2 個占位符， // 年(y)可以用 1-4 個占位符，毫秒(S)只能用 1 個占位符(是 1-3 位的數(shù)字) // 例子： // (new Date()).Format("yyyy-MM-dd hh:mm:ss.S") ==> 2006-07-02 08:09:04.423 // (new Date()).Format("yyyy-M-d h:m:s.S") ==> 2006-7-2 8:9:4.18 Date.prototype.Format = function (fmt) { //author: meizz var o = {"M+": this.getMonth() + 1, //月份 "d+": this.getDate(), //日 "h+": this.getHours(), //小時 "m+": this.getMinutes(), //分 "s+": this.getSeconds(), //秒 "q+": Math.floor((this.getMonth() + 3) / 3), //季度 "S": this.getMilliseconds() //毫秒 };if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));for (var k in o)if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));return fmt; }調(diào)用： var time1 = new Date().Format("yyyy-MM-dd"); var time2 = new Date().Format("yyyy-MM-dd HH:mm:ss");

方法二：

Date.prototype.format = function (mask) { var d = this;var zeroize = function (value, length) {if (!length) length = 2;value = String(value);for (var i = 0, zeros = ''; i < (length - value.length); i++) {zeros += '0';}return zeros + value;};return mask.replace(/"[^"]*"|'[^']*'|/b ( ? : d {1, 4} | m {1, 4} | yy( ? : yy) ? | ([hHMstT]) / 1 ? | [lLZ]) / b / g, function ($0) {switch ($0) {case 'd':return d.getDate();case 'dd':return zeroize(d.getDate());case 'ddd':return ['Sun', 'Mon', 'Tue', 'Wed', 'Thr', 'Fri', 'Sat'][d.getDay()];case 'dddd':return ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'][d.getDay()];case 'M':return d.getMonth() + 1;case 'MM':return zeroize(d.getMonth() + 1);case 'MMM':return ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'][d.getMonth()];case 'MMMM':return ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'][d.getMonth()];case 'yy':return String(d.getFullYear()).substr(2);case 'yyyy':return d.getFullYear();case 'h':return d.getHours() % 12 || 12;case 'hh':return zeroize(d.getHours() % 12 || 12);case 'H':return d.getHours();case 'HH':return zeroize(d.getHours());case 'm':return d.getMinutes();case 'mm':return zeroize(d.getMinutes());case 's':return d.getSeconds();case 'ss':return zeroize(d.getSeconds());case 'l':return zeroize(d.getMilliseconds(), 3);case 'L':var m = d.getMilliseconds();if (m > 99) m = Math.round(m / 10);return zeroize(m);case 'tt':return d.getHours() < 12 ? 'am' : 'pm';case 'TT':return d.getHours() < 12 ? 'AM' : 'PM';case 'Z':return d.toUTCString().match(/[A-Z]+$/);// Return quoted strings with the surrounding quotes removed default:return $0.substr(1, $0.length - 2);}});};
其他時間驗證和格式化方法：

//--------------------------------------------------- // 判斷閏年 //--------------------------------------------------- Date.prototype.isLeapYear = function() { return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0))); } //--------------------------------------------------- // 日期格式化 // 格式 YYYY/yyyy/YY/yy 表示年份 // MM/M 月份 // W/w 星期 // dd/DD/d/D 日期 // hh/HH/h/H 時間 // mm/m 分鐘 // ss/SS/s/S 秒 //--------------------------------------------------- Date.prototype.Format = function(formatStr) { var str = formatStr; var Week = ['日','一','二','三','四','五','六']; str=str.replace(/yyyy|YYYY/,this.getFullYear()); str=str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() % 100).toString():'0' + (this.getYear() % 100)); str=str.replace(/MM/,this.getMonth()>9?this.getMonth().toString():'0' + this.getMonth()); str=str.replace(/M/g,this.getMonth()); str=str.replace(/w|W/g,Week[this.getDay()]); str=str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():'0' + this.getDate()); str=str.replace(/d|D/g,this.getDate()); str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString():'0' + this.getHours()); str=str.replace(/h|H/g,this.getHours()); str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString():'0' + this.getMinutes()); str=str.replace(/m/g,this.getMinutes()); str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds().toString():'0' + this.getSeconds()); str=str.replace(/s|S/g,this.getSeconds()); return str; } //+--------------------------------------------------- //| 求兩個時間的天數(shù)差日期格式為 YYYY-MM-dd //+--------------------------------------------------- function daysBetween(DateOne,DateTwo) { var OneMonth = DateOne.substring(5,DateOne.lastIndexOf ('-')); var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf ('-')+1); var OneYear = DateOne.substring(0,DateOne.indexOf ('-')); var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ('-')); var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ('-')+1); var TwoYear = DateTwo.substring(0,DateTwo.indexOf ('-')); var cha=((Date.parse(OneMonth+'/'+OneDay+'/'+OneYear)- Date.parse(TwoMonth+'/'+TwoDay+'/'+TwoYear))/86400000); return Math.abs(cha); } //+--------------------------------------------------- //| 日期計算 //+--------------------------------------------------- Date.prototype.DateAdd = function(strInterval, Number) { var dtTmp = this; switch (strInterval) { case 's' :return new Date(Date.parse(dtTmp) + (1000 * Number)); case 'n' :return new Date(Date.parse(dtTmp) + (60000 * Number)); case 'h' :return new Date(Date.parse(dtTmp) + (3600000 * Number)); case 'd' :return new Date(Date.parse(dtTmp) + (86400000 * Number)); case 'w' :return new Date(Date.parse(dtTmp) + ((86400000 * 7) * Number)); case 'q' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number*3, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds()); case 'm' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds()); case 'y' :return new Date((dtTmp.getFullYear() + Number), dtTmp.getMonth(), dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds()); } } //+--------------------------------------------------- //| 比較日期差 dtEnd 格式為日期型或者有效日期格式字符串 //+--------------------------------------------------- Date.prototype.DateDiff = function(strInterval, dtEnd) { var dtStart = this; if (typeof dtEnd == 'string' )//如果是字符串轉(zhuǎn)換為日期型 { dtEnd = StringToDate(dtEnd); } switch (strInterval) { case 's' :return parseInt((dtEnd - dtStart) / 1000); case 'n' :return parseInt((dtEnd - dtStart) / 60000); case 'h' :return parseInt((dtEnd - dtStart) / 3600000); case 'd' :return parseInt((dtEnd - dtStart) / 86400000); case 'w' :return parseInt((dtEnd - dtStart) / (86400000 * 7)); case 'm' :return (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) - (dtStart.getMonth()+1); case 'y' :return dtEnd.getFullYear() - dtStart.getFullYear(); } } //+--------------------------------------------------- //| 日期輸出字符串，重載了系統(tǒng)的toString方法 //+--------------------------------------------------- Date.prototype.toString = function(showWeek) { var myDate= this; var str = myDate.toLocaleDateString(); if (showWeek) { var Week = ['日','一','二','三','四','五','六']; str += ' 星期' + Week[myDate.getDay()]; } return str; } //+--------------------------------------------------- //| 日期合法性驗證 //| 格式為：YYYY-MM-DD或YYYY/MM/DD //+--------------------------------------------------- function IsValidDate(DateStr) { var sDate=DateStr.replace(/(^\s+|\s+$)/g,''); //去兩邊空格; if(sDate=='') return true; //如果格式滿足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替換為'' //數(shù)據(jù)庫中，合法日期可以是:YYYY-MM/DD(2003-3/21),數(shù)據(jù)庫會自動轉(zhuǎn)換為YYYY-MM-DD格式 var s = sDate.replace(/[\d]{ 4,4 }[\-/]{ 1 }[\d]{ 1,2 }[\-/]{ 1 }[\d]{ 1,2 }/g,''); if (s=='') //說明格式滿足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D { var t=new Date(sDate.replace(/\-/g,'/')); var ar = sDate.split(/[-/:]/); if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] != t.getDate()) { //alert('錯誤的日期格式！格式為：YYYY-MM-DD或YYYY/MM/DD。注意閏年。'); return false; } } else { //alert('錯誤的日期格式！格式為：YYYY-MM-DD或YYYY/MM/DD。注意閏年。'); return false; } return true; } //+--------------------------------------------------- //| 日期時間檢查 //| 格式為：YYYY-MM-DD HH:MM:SS //+--------------------------------------------------- function CheckDateTime(str) { var reg = /^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2 })$/; var r = str.match(reg); if(r==null)return false; r[2]=r[2]-1; var d= new Date(r[1],r[2],r[3],r[4],r[5],r[6]); if(d.getFullYear()!=r[1])return false; if(d.getMonth()!=r[2])return false; if(d.getDate()!=r[3])return false; if(d.getHours()!=r[4])return false; if(d.getMinutes()!=r[5])return false; if(d.getSeconds()!=r[6])return false; return true; } //+--------------------------------------------------- //| 把日期分割成數(shù)組 //+--------------------------------------------------- Date.prototype.toArray = function() { var myDate = this; var myArray = Array(); myArray[0] = myDate.getFullYear(); myArray[1] = myDate.getMonth(); myArray[2] = myDate.getDate(); myArray[3] = myDate.getHours(); myArray[4] = myDate.getMinutes(); myArray[5] = myDate.getSeconds(); return myArray; } //+--------------------------------------------------- //| 取得日期數(shù)據(jù)信息 //| 參數(shù) interval 表示數(shù)據(jù)類型 //| y 年 m月 d日 w星期 ww周 h時 n分 s秒 //+--------------------------------------------------- Date.prototype.DatePart = function(interval) { var myDate = this; var partStr=''; var Week = ['日','一','二','三','四','五','六']; switch (interval) { case 'y' :partStr = myDate.getFullYear();break; case 'm' :partStr = myDate.getMonth()+1;break; case 'd' :partStr = myDate.getDate();break; case 'w' :partStr = Week[myDate.getDay()];break; case 'ww' :partStr = myDate.WeekNumOfYear();break; case 'h' :partStr = myDate.getHours();break; case 'n' :partStr = myDate.getMinutes();break; case 's' :partStr = myDate.getSeconds();break; } return partStr; } //+--------------------------------------------------- //| 取得當(dāng)前日期所在月的最大天數(shù) //+--------------------------------------------------- Date.prototype.MaxDayOfDate = function() { var myDate = this; var ary = myDate.toArray(); var date1 = (new Date(ary[0],ary[1]+1,1)); var date2 = date1.dateAdd(1,'m',1); var result = dateDiff(date1.Format('yyyy-MM-dd'),date2.Format('yyyy-MM-dd')); return result; } //+--------------------------------------------------- //| 取得當(dāng)前日期所在周是一年中的第幾周 //+--------------------------------------------------- Date.prototype.WeekNumOfYear = function() { var myDate = this; var ary = myDate.toArray(); var year = ary[0]; var month = ary[1]+1; var day = ary[2]; document.write('< script language=VBScript\> \n'); document.write('myDate = Datue(''+month+'-'+day+'-'+year+'') \n'); document.write('result = DatePart('ww', myDate) \n'); document.write(' \n'); return result; } //+--------------------------------------------------- //| 字符串轉(zhuǎn)成日期類型 //| 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd //+--------------------------------------------------- function StringToDate(DateStr) { var converted = Date.parse(DateStr); var myDate = new Date(converted); if (isNaN(myDate)) { //var delimCahar = DateStr.indexOf('/')!=-1?'/':'-'; var arys= DateStr.split('-'); myDate = new Date(arys[0],--arys[1],arys[2]); } return myDate; } 若要顯示:當(dāng)前日期加時間(如:2009-06-12 12:00)function CurentTime(){ var now = new Date();var year = now.getFullYear(); //年var month = now.getMonth() + 1; //月var day = now.getDate(); //日var hh = now.getHours(); //時var mm = now.getMinutes(); //分var clock = year + "-";if(month < 10)clock += "0";clock += month + "-";if(day < 10)clock += "0";clock += day + " ";if(hh < 10)clock += "0";clock += hh + ":";if (mm < 10) clock += '0'; clock += mm; return(clock); }

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