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javascript Date format(js日期格式化)

方法一:

 1 // 对Date的扩展,将 Date 转化为指定格式的String 2 // 月(M)、日(d)、小时(h)、分(m)、秒(s)、季度(q) 可以用 1-2 个占位符,  3 // 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)  4 // 例子:  5 // (new Date()).Format("yyyy-MM-dd hh:mm:ss.S") ==> 2006-07-02 08:09:04.423  6 // (new Date()).Format("yyyy-M-d h:m:s.S")      ==> 2006-7-2 8:9:4.18  7 Date.prototype.Format = function (fmt) { //author: meizz  8     var o = { 9         "M+": this.getMonth() + 1, //月份 10         "d+": this.getDate(), //11         "h+": this.getHours(), //小时 12         "m+": this.getMinutes(), //13         "s+": this.getSeconds(), //14         "q+": Math.floor((this.getMonth() + 3) / 3), //季度 15         "S": this.getMilliseconds() //毫秒 16     };17     if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));18     for (var k in o)19     if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));20     return fmt;21 }22 //调用: 23 var time1 = new Date().Format("yyyy-MM-dd");var time2 = new Date().Format("yyyy-MM-dd HH:mm:ss");

方法二:

 1 <!-- /** * 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) 2     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 3     Date()).pattern("yyyy-MM-dd hh:mm:ss.S")==> 2006-07-02 08:09:04.423       4  * (new Date()).pattern("yyyy-MM-dd E HH:mm:ss") ==> 2009-03-10 二 20:09:04       5  * (new Date()).pattern("yyyy-MM-dd EE hh:mm:ss") ==> 2009-03-10 周二 08:09:04       6  * (new Date()).pattern("yyyy-MM-dd EEE hh:mm:ss") ==> 2009-03-10 星期二 08:09:04       7  * (new Date()).pattern("yyyy-M-d h:m:s.S") ==> 2006-7-2 8:9:4.18       8  */         9 Date.prototype.pattern=function(fmt) {         10     var o = {         11     "M+" : this.getMonth()+1, //月份         12     "d+" : this.getDate(), //13     "h+" : this.getHours()%12 == 0 ? 12 : this.getHours()%12, //小时         14     "H+" : this.getHours(), //小时         15     "m+" : this.getMinutes(), //16     "s+" : this.getSeconds(), //17     "q+" : Math.floor((this.getMonth()+3)/3), //季度         18     "S" : this.getMilliseconds() //毫秒         19     };         20     var week = {         21     "0" : "/u65e5",         22     "1" : "/u4e00",         23     "2" : "/u4e8c",         24     "3" : "/u4e09",         25     "4" : "/u56db",         26     "5" : "/u4e94",         27     "6" : "/u516d"        28     };         29     if(/(y+)/.test(fmt)){         30         fmt=fmt.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length));         31     }         32     if(/(E+)/.test(fmt)){         33         fmt=fmt.replace(RegExp.$1, ((RegExp.$1.length>1) ? (RegExp.$1.length>2 ? "/u661f/u671f" : "/u5468") : "")+week[this.getDay()+""]);         34     }         35     for(var k in o){         36         if(new RegExp("("+ k +")").test(fmt)){         37             fmt = fmt.replace(RegExp.$1, (RegExp.$1.length==1) ? (o[k]) : (("00"+ o[k]).substr((""+ o[k]).length)));         38         }         39     }         40     return fmt;         41 }       42      43 var date = new Date();      44 window.alert(date.pattern("yyyy-MM-dd hh:mm:ss"));45 // -->

方法三:

  1 Date.prototype.format = function (mask) {   2     var d = this;  3   4     var zeroize = function (value, length) {  5   6             if (!length) length = 2;  7   8             value =http://www.mamicode.com/ String(value);  9  10             for (var i = 0, zeros = ‘‘; i < (length - value.length); i++) { 11  12                 zeros += ‘0‘; 13  14             } 15  16             return zeros + value; 17  18         }; 19  20     return mask.replace(/"[^"]*"|‘[^‘]*‘|/b ( ? : d { 21         1, 4 22     } | m { 23         1, 4 24     } | yy( ? : yy) ? | ([hHMstT]) / 1 ? | [lLZ]) / b / g, function ($0) { 25  26         switch ($0) { 27  28         case ‘d‘: 29             return d.getDate(); 30  31         case ‘dd‘: 32             return zeroize(d.getDate()); 33  34         case ‘ddd‘: 35             return [‘Sun‘, ‘Mon‘, ‘Tue‘, ‘Wed‘, ‘Thr‘, ‘Fri‘, ‘Sat‘][d.getDay()]; 36  37         case ‘dddd‘: 38             return [‘Sunday‘, ‘Monday‘, ‘Tuesday‘, ‘Wednesday‘, ‘Thursday‘, ‘Friday‘, ‘Saturday‘][d.getDay()]; 39  40         case ‘M‘: 41             return d.getMonth() + 1; 42  43         case ‘MM‘: 44             return zeroize(d.getMonth() + 1); 45  46         case ‘MMM‘: 47             return [‘Jan‘, ‘Feb‘, ‘Mar‘, ‘Apr‘, ‘May‘, ‘Jun‘, ‘Jul‘, ‘Aug‘, ‘Sep‘, ‘Oct‘, ‘Nov‘, ‘Dec‘][d.getMonth()]; 48  49         case ‘MMMM‘: 50             return [‘January‘, ‘February‘, ‘March‘, ‘April‘, ‘May‘, ‘June‘, ‘July‘, ‘August‘, ‘September‘, ‘October‘, ‘November‘, ‘December‘][d.getMonth()]; 51  52         case ‘yy‘: 53             return String(d.getFullYear()).substr(2); 54  55         case ‘yyyy‘: 56             return d.getFullYear(); 57  58         case ‘h‘: 59             return d.getHours() % 12 || 12; 60  61         case ‘hh‘: 62             return zeroize(d.getHours() % 12 || 12); 63  64         case ‘H‘: 65             return d.getHours(); 66  67         case ‘HH‘: 68             return zeroize(d.getHours()); 69  70         case ‘m‘: 71             return d.getMinutes(); 72  73         case ‘mm‘: 74             return zeroize(d.getMinutes()); 75  76         case ‘s‘: 77             return d.getSeconds(); 78  79         case ‘ss‘: 80             return zeroize(d.getSeconds()); 81  82         case ‘l‘: 83             return zeroize(d.getMilliseconds(), 3); 84  85         case ‘L‘: 86             var m = d.getMilliseconds(); 87  88             if (m > 99) m = Math.round(m / 10); 89  90             return zeroize(m); 91  92         case ‘tt‘: 93             return d.getHours() < 12 ? ‘am‘ : ‘pm‘; 94  95         case ‘TT‘: 96             return d.getHours() < 12 ? ‘AM‘ : ‘PM‘; 97  98         case ‘Z‘: 99             return d.toUTCString().match(/[A-Z]+$/);100 101             // Return quoted strings with the surrounding quotes removed      102 103         default:104             return $0.substr(1, $0.length - 2);105 106         }107 108     });109 110 };

 

javascript Date format(js日期格式化)