DATE对象增强特性 QQCAT--IT技术

DATE对象增强特性

[ 来自:不祥作者:网络收集阅读:0 时间:2008-1-25 19:41:31 ]

//日期差值
Date.prototype.DayDiff = function(cDate,mode){
	//code by windy_sk , seasonx@163.net
	try{
		cDate.getYear();
	}catch(e){
		return(0);
	}
	var base =60*60*24*1000;
	var result = Math.abs(this - cDate);
	switch(mode){
		case "y":
			result/=base*365;
			break;
		case "m":
			result/=base*365/12;
			break;
		case "w":
			result/=base*7;
			break;
		default:
			result/=base;
			break;
	}
	return(Math.floor(result));
}
alert((new Date()).DayDiff((new Date(2002,0,1))))
alert((new Date()).DayDiff((new Date(2002,0,1)),"m"))
</script>

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