通过JavaScript获取一周中的特定日期的日期 [英] Get date of specific day of the week in JavaScript
问题描述
Date()
直到一周的特定日期,然后获得该月份,日,年。 例如今天是09/03/10,但我想要一个功能( nextSession()
)返回09/08/10(下个星期三)。
我该怎么做?我可以想到的最好的事情是向 setDate()
添加一天,直到 getDay()
== 3,但是这是一个丑陋的...
PS jQuery是很酷的。
function nextSession(date){
var ret = new Date(date || new Date());
ret.setDate(ret.getDate()+(3 - 1 - ret.getDay()+ 7)%7 + 1);
return ret;
}
这个将在下个星期三设置日期。如果已经是星期三,结果将在给定日期后一周。
编辑:添加了没有参数调用函数的可能性: nextSession )
- 从今天起返回下一个会话日期
I think i'm mainly having a brain fart. I just want to fast forward a Date()
until a specific day of the week and then get the Month, Day, Year for that.
E.g. today is 09/03/10 but i want a function (nextSession()
) to return 09/08/10 (next wednesday).
How would I do this? The best thing I can think of is add a day to setDate()
until getDay()
== 3, but it's sorta ugly...
P.S. jQuery is cool too.
function nextSession(date) {
var ret = new Date(date||new Date());
ret.setDate(ret.getDate() + (3 - 1 - ret.getDay() + 7) % 7 + 1);
return ret;
}
This one will set date to next Wednesday. If it is already Wednesday, result will be one week later from given date.
EDIT: Added possibility of calling function without a parameter: nextSession()
- it returns next session date from today
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