Created
October 31, 2016 01:38
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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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