JS 时间格式化

 

Date.prototype.format = function(format){ 

var o = { 

"M+" : this.getMonth()+1, //month 

"d+" : this.getDate(), //day 

"h+" : this.getHours(), //hour 

"m+" : this.getMinutes(), //minute 

"s+" : this.getSeconds(), //second 

"q+" : Math.floor((this.getMonth()+3)/3), //quarter 

"S" : this.getMilliseconds() //millisecond 

} 



if(/(y+)/.test(format)) { 

format = format.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length)); 

} 



for(var k in o) { 

if(new RegExp("("+ k +")").test(format)) { 

format = format.replace(RegExp.$1, RegExp.$1.length==1 ? o[k] : ("00"+ o[k]).substr((""+ o[k]).length)); 

} 

} 

return format; 

}