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June 15, 2018 14:42
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对Date的扩展，将 Date 转化为指定格式的String
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| /** | |
| * 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; | |
| } |
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