2

我正在与一个在本月的第二个星期一见面的小组工作,他们希望他们的网站反映下一次会议的日期。我有这个月的第二个星期一要显示的脚本,但是我遇到了 if else 语句的问题。我需要它来反映下一个即将发生的事件,而不仅仅是这个月的日期。IE。本月的事件日期是 2012 年 8 月 13 日,已超过当前日期(2012 年 8 月 21 日)。我希望它移动到下一个可用日期 2012 年 9 月 10 日。下面是我到目前为止的代码。

<script type="text/javascript">
Date.prototype.x = function () {
var d = new Date (this.getFullYear(), this.getMonth(), 1, 0, 0, 0)
d.setDate (d.getDate() + 15 - d.getDay())
return d
}
Date.prototype.getSecondMonday = function () {
var d = new Date (this.getFullYear(), 1, 1, 0, 0, 0)
d.setMonth(this.getMonth()+1)
d.setDate (d.getDate() + 15 - d.getDay())
return d
}
var today = new Date()
var todayDate = today.toDateString()

if (Date.prototype.x>todayDate)
  {
document.write (new Date().x().toDateString());
  }
else
  {
document.write (new Date().getSecondMonday().toDateString());
  }
</script>
4

2 回答 2

0

您缺少()x功能,因此它没有执行它。:) 应该:

if (Date.prototype.x() > todayDate) 

更新:这是清理后的逻辑的固定/工作版本(可能被过度评论,但我想如果有人需要它至少在那里)。

Date.prototype.nextSecondMonday = function (){
    // Load the month.
    var target = new Date(this.getFullYear(), this.getMonth(), 1, 0, 0, 0);
    var today = new Date();

    // Check to see if the 1st is on a Monday.
    var isMonday = (target.getDay() == 1);

    // Jump ahead two weeks from the 1st, and move back the appropriate number of days to reach the preceding Monday.
    // i.e. If the 1st is a Thursday, we would move back three days.
    var targetDate = 15 - (target.getDay() - 1);

    // Quick adjustment if the 1st is a Monday.
    if (isMonday) targetDate -= 7;

    // Move to the second Monday in the month.   
    target.setDate(targetDate);

    // Second Monday is before today's date, so find the second Monday next month.
    if (today > target) {
        //return "<em>" + target.toLocaleDateString() + " is in the past...</em>";
        target.setMonth(target.getMonth() + 1);
        return target.nextSecondMonday();
    }

    // Format and return string date of second Monday.
    return target.toLocaleDateString();
}


// Working test for the year 2012.
//for (var i = 0; i < 12; i++)
    //$("#log").append(new Date(2012, i).nextSecondMonday() + "<br /><br />");
于 2012-08-22T01:24:12.660 回答
0

如果当月第二个星期一的日期小于当前日期,则在下个月的第一天调用该函数。

Date.prototype.nextSecondMonday= function(){
    var temp= new Date(this), d= temp.getDate(), n= 1;
    while(temp.getDay()!= 1) temp.setDate(++n);
    temp.setDate(n+7);
    if(d>temp.getDate()){
        temp.setMonth(temp.getMonth()+1, 1);
        return temp.nextSecondMonday();
    }
    return temp.toLocaleDateString();
}


/*  tests


var x= new Date(2012, 7, 22);
x.nextSecondMonday()
Monday, September 10, 2012

var x= new Date(2012, 7, 12);
x.nextSecondMonday()
Monday, August 13, 2012
*/
于 2012-08-22T05:02:10.857 回答