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在上篇文章给大家介绍了js对Date对象的操作的问题(生成一个倒数7天的数组),本篇介绍有关js日期格式化之javascript Date format,本文通过三种方法给大家讲解,具体内容请看下文。
方法一:
// 对Date的扩展,将 Date 转化为指定格式的String// 月(M)、日(d)、小时(h)、分(m)、秒(s)、季度(q) 可以用 1-2 个占位符, // 年(y)可以用 1-4 个占位符,毫秒(S)只能用 1 个占位符(是 1-3 位的数字) // 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: meizzvar o = {"M+": this.getMonth() + 1, //月份 "d+": this.getDate(), //日 "h+": this.getHours(), //小时 "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;}
调用方式:
var time1 = new Date().Format("yyyy-MM-dd");var time2 = new Date().Format("yyyy-MM-dd HH:mm:ss"); 
方法二:
<script language="javascript" type="text/javascript"> <!-- /** * 对Date的扩展,将 Date 转化为指定格式的String * 月(M)、日(d)、12小时(h)、24小时(H)、分(m)、秒(s)、周(E)、季度(q) 可以用 1-2 个占位符 * 年(y)可以用 1-4 个占位符,毫秒(S)只能用 1 个占位符(是 1-3 位的数字) * eg: * (new Date()).pattern("yyyy-MM-dd hh:mm:ss.S")==> 2006-07-02 08:09:04.423 * (new Date()).pattern("yyyy-MM-dd E HH:mm:ss") ==> 2009-03-10 二 20:09:04 * (new Date()).pattern("yyyy-MM-dd EE hh:mm:ss") ==> 2009-03-10 周二 08:09:04 * (new Date()).pattern("yyyy-MM-dd EEE hh:mm:ss") ==> 2009-03-10 星期二 08:09:04 * (new Date()).pattern("yyyy-M-d h:m:s.S") ==> 2006-7-2 8:9:4.18 */Date.prototype.pattern=function(fmt) {var o = {"M+" : this.getMonth()+1, //月份"d+" : this.getDate(), //日"h+" : this.getHours()%12 == 0 ? 12 : this.getHours()%12, //小时"H+" : this.getHours(), //小时"m+" : this.getMinutes(), //分"s+" : this.getSeconds(), //秒"q+" : Math.floor((this.getMonth()+3)/3), //季度"S" : this.getMilliseconds() //毫秒};var week = {"0" : "/u65e5","1" : "/u4e00","2" : "/u4e8c","3" : "/u4e09","4" : "/u56db","5" : "/u4e94","6" : "/u516d" };if(/(y+)/.test(fmt)){ fmt=fmt.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length));}if(/(E+)/.test(fmt)){ fmt=fmt.replace(RegExp.$1, ((RegExp.$1.length>1) ? (RegExp.$1.length>2 ? "/u661f/u671f" : "/u5468") : "")+week[this.getDay()+""]);}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; } var date = new Date();window.alert(date.pattern("yyyy-MM-dd hh:mm:ss"));// --></script>
方法三:
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 removeddefault: return $0.substr(1, $0.length - 2);} });};
以上内容是本文给大家介绍的JS日期格式化之javascript Date format,希望大家喜欢。