js日期格式化

/* 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) { ????var 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;}

<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>

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); ???????} ???});};