【JS】设置时间格式

dateFormat.js

	/** 
	 * transform the Date to String according the format pattern
	 * eg: 
	 * (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 
	 */  
	exports.dateFormat = function(date,fmt) {
		var o = {
		"M+" : date.getMonth() + 1, 
		"d+" : date.getDate(), 
		"h+" : date.getHours() % 12 == 0 ? 12 : date.getHours()%12, 
		"H+" : date.getHours(), 
		"m+" : date.getMinutes(), 
		"s+" : date.getSeconds(), 
		"q+" : Math.floor((date.getMonth()+3)/3), 
		"S" : date.getMilliseconds() 
		};
		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, (date.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[date.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;
	};