JQuery Datepicker - 添加年份(JQuery Datepicker - Add Years)

 我已将JQuery Datepicker控件添加到我的一个ASP.Net页面中。 该页面允许用户添加有关设备的详细信息。 
 
 他们还可以使用Datepicker选择他们购买设备的日期，然后从下拉列表中选择设备随附的保修长度（即1,2,3,4,5岁等）。 根据他们选择的保修期，我需要JQuery代码来计算保修期到期的设备，即，如果购买21/02/2011，3年保修，则保修到期日为21/02/2014。 
 
 我看过这个网站上的其他Datepicker示例，但似乎都没有显示如何添加年份到日期，而只是如何添加天。 
 
 到目前为止这是我的代码 
 
$('#equipment_purchaseDate').datepicker({ dateFormat: 'dd/mm/yy', onSelect: function (dateStr) {
        var d = $.datepicker.parseDate('dd/mm/yy', dateStr);
        d.setDate(d.getDate() + ($('#equipment_warrantyLength').val() * 365)); //multiple warranty length by 365 to get years, then add to startDate
        $('#equipment_warrentyExpires').datepicker('setDate', d);
    } 
});
 
 但是这似乎没有正常工作。 
 
 任何反馈都将非常感激。 
 
 谢谢。 

I have added the JQuery Datepicker control to one of my ASP.Net pages. The page allows a user to add details about a piece of equipment. 
 
They can also select the date they bought the equipment using the Datepicker, then from a drop down list, select the warranty length (ie, 1,2,3,4,5 years etc) that comes with the equipment. Based on the warranty length they have selected, I need JQuery code to work out the date the warranty will expire for the Equipment, ie, if bought 21/02/2011, 3 year warrenty, then warranty expires 21/02/2014.
 
I have looked at the other Datepicker examples on this site, but none seem to show how to add years to a date, rather just how to add days.
 
This is my code so far
 
$('#equipment_purchaseDate').datepicker({ dateFormat: 'dd/mm/yy', onSelect: function (dateStr) {
        var d = $.datepicker.parseDate('dd/mm/yy', dateStr);
        d.setDate(d.getDate() + ($('#equipment_warrantyLength').val() * 365)); //multiple warranty length by 365 to get years, then add to startDate
        $('#equipment_warrentyExpires').datepicker('setDate', d);
    } 
});
 
However this doesn't seem to be working correctly.
 
Any feedback would be much appreciated.
 
Thanks.

原文：https://stackoverflow.com/questions/5067765