获取当前周下周上周日期
just
posted @ 2012年11月04日 21:00
in web
, 2623 阅读
/*获取yyyy-mm-dd day天的日期数组
* getDays('2012-11-01',2)
* 返回['2012-11-01','2012-11-02']
*/
function getDays(str, day){
var dd, mm, yy;
var reg = /^(\d{4})-(\d{1,2})-(\d{1,2})$/;
if (arr = str.match(reg)) {
yy = Number(arr[1]);
mm = Number(arr[2])-1;
dd = Number(arr[3]);
} else {
var d = new Date();
yy = d.getUTCFullYear();
mm = ("00"+(d.getUTCMonth())).slice(-2);
dd = ("00"+d.getUTCDate()).slice(-2);
}
var aa=[];
if(day>=0){
for(var i=0;i<day;i++){
aa.push(_getDate(yy, mm, dd, i));
}
}else{
for(var i=(day+1);i<=0;i++){
aa.push(_getDate(yy, mm, dd, i));
}
}
//alert(aa);
return aa;
}
/*
*返回n天后的日期
* get_day("2012-11-01",3) 返回 "2012-11-04"
*
*/
function get_day(str, n){
var dd, mm, yy;
var reg = /^(\d{4})-(\d{1,2})-(\d{1,2})$/;
if (arr = str.match(reg)) {
yy = Number(arr[1]);
mm = Number(arr[2])-1;
dd = Number(arr[3]);
} else {
var d = new Date();
yy = d.getUTCFullYear();
mm = ("00"+(d.getUTCMonth())).slice(-2);
dd = ("00"+d.getUTCDate()).slice(-2);
}
var aa=_getDate(yy, mm, dd, n);
return aa;
}
/*
* 获取day天后的日期
* 例如_getDate(2012,11,1,2):获取2012-11-01后2天的日期
例如_getDate(2012,11,1,-2):获取2012-11-01前2天的日期
*/
function _getDate(yy, mm, dd, day) {
var s, d, t, t2;
t = Date.UTC(yy, mm, dd);
t2 = day * 1000 * 3600 * 24; //加减day天的时间
t+= t2;
d = new Date(t);
s = d.getUTCFullYear() + "-";
s += ("00"+(d.getUTCMonth()+1)).slice(-2) + "-";
s += ("00"+d.getUTCDate()).slice(-2);
//alert(s);
return s;
}
/*这个方法将取得 某日期(nowDate) 所在周的星期几(weekDay)的日期
* getNextDate("2012-11-04",1); 2012-11-04所在周的星期一的日期
* 返回2012-10-29
*
*/
function getNextDate(str,weekDay){
var dd, mm, yy;
var reg = /^(\d{4})-(\d{1,2})-(\d{1,2})$/;
if (arr = str.match(reg)) {
yy = Number(arr[1]);
mm = Number(arr[2])-1;
dd = Number(arr[3]);
}
var t = Date.UTC(yy, mm, dd);
var d = new Date(t);
weekDay%=7;
var day = d.getDay();
if(day==0)day=7;//自己加的 否则如果是周日 day=0 我取所在周一的日期，返回的是下周的
var time = d.getTime();
var sub = weekDay-day;
time+=sub*24*3600000;
d.setTime(time);
var s = d.getUTCFullYear() + "-";
s += ("00"+(d.getUTCMonth()+1)).slice(-2) + "-";
s += ("00"+d.getUTCDate()).slice(-2);
return s;
}
function getNextDate1(str,weekDay){
var d=new Date(str);
weekDay%=7;
var day = d.getDay();
if(day==0)day=7;//自己加的 否则如果是周日 day=0 我取所在周一的日期，返回的是下周的
var time = d.getTime();
var sub = weekDay-day;
time+=sub*24*3600000;
d.setTime(time);
var s = d.getUTCFullYear() + "-";
s += ("00"+(d.getUTCMonth()+1)).slice(-2) + "-";
s += ("00"+d.getUTCDate()).slice(-2);
return s;
}
/*
* 参数 2012-11-08
* 返回周几
*/
function week(dd){
dd=dd.replace(/\-/g,"/");
var week="日一二三四五六".charAt(new Date(dd).getDay());
return week;
}
/*
* 获取当前日期
*/
function getCurrDay(){
var d = new Date();
yy = d.getUTCFullYear();
mm = ("00"+(d.getUTCMonth()+1)).slice(-2);
dd = ("00"+d.getUTCDate()).slice(-2);
return yy+"-"+mm+"-"+dd;
}
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<SCRIPT type=text/javascript src="week_day.js"></SCRIPT>
<script type="text/javascript">
function getWeek(flag){
var start_day="";
var curr_day=getCurrDay();
var mon_day=getNextDate(curr_day,1);//当前日期所在周星期一的日期
if(flag=='本周'){//查询本周
start_day=mon_day;//当前时间
d=getDays(start_day,7);
}else if(flag=='下周'){//下周
start_day=get_day(mon_day,7);//获取7天后的开始日期
d=getDays(start_day,7);
}else if(flag=='下下周'){//下下周
start_day=get_day(mon_day,14);//获取14天后的开始日期
d=getDays(start_day,7);
}else if (flag=='上周'){
start_day=get_day(mon_day,-7);//获取7天后的开始日期
d=getDays(start_day,7);
}
alert(d);
}
</script>
</head>
<body>
<button onclick="getWeek('上周')">上周</button>
<button onclick="getWeek('本周')">本周</button>
<button onclick="getWeek('下周')">下周</button>
<button onclick="getWeek('下下周')">下下周</button>
</body>
</html>
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2018年12月12日 11:17
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