jQuery 将日期添加到日期
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jQuery adding days to a date
提问by Keith Power
I am trying to add a number of days to a date selector input to get a start date and end date. I am getting an incorrect end date and cant see why.
我正在尝试向日期选择器输入添加天数以获取开始日期和结束日期。我得到的结束日期不正确，不知道为什么。
Example: Date selected 25-10-2011, days 1
示例：选择日期 25-10-2011，第 1 天
Result: date_start 2011-9-25, date_end 2012-5-7
结果：date_start 2011-9-25，date_end 2012-5-7
function makeUpDates(){
// concantenate values to date_start and date_end hidden inputs
var dateString = document.getElementById('date').value,
date = new Date(dateString);
document.getElementById('date_start').value = date.getFullYear() + '-' + date.getMonth() + '-' + date.getDate();
var numDays = document.getElementById('slider').value;
date.setDate(date.getDate() + numDays);
var dateEnd = date.getFullYear() + '-' + date.getMonth() + '-' + date.getDate();
document.getElementById('date_end').value = dateEnd;
}
回答by AWizardInDallas
I prefer passing arguments to functions rather than using hidden inputs. I also wanted the date to come out in the original format, since I'm working with date pickers expecting the date string in a particular format. I also decided to make the function a little more flexible with regard to the date separator and padding. Usage: AddDaysToDate("03/18/2016", 5, "/"), adds 5 days so returns "03/23/2016."
我更喜欢将参数传递给函数而不是使用隐藏的输入。我还希望日期以原始格式出现，因为我正在使用期望日期字符串为特定格式的日期选择器。我还决定使函数在日期分隔符和填充方面更加灵活。用法：AddDaysToDate("03/18/2016", 5, "/")，加上 5 天所以返回 "03/23/2016"。
function AddDaysToDate(sDate, iAddDays, sSeperator) {
//Purpose: Add the specified number of dates to a given date.
var date = new Date(sDate);
date.setDate(date.getDate() + parseInt(iAddDays));
var sEndDate = LPad(date.getMonth() + 1, 2) + sSeperator + LPad(date.getDate(), 2) + sSeperator + date.getFullYear();
return sEndDate;
}
function LPad(sValue, iPadBy) {
sValue = sValue.toString();
return sValue.length < iPadBy ? LPad("0" + sValue, iPadBy) : sValue;
}
回答by Royi Namir
var today =new Date('12/22/1978');
var in_a_day =new Date(today).setDate(today.getDate()+1); //+1 or +x
edit your date format should be : mm/dd/yyyy
编辑您的日期格式应该是： mm/dd/yyyy
回答by Keith Power
The issue was that the numDays had to be converted to an integer before added. Otherwise I was getting strange results.
问题是在添加之前必须将 numDays 转换为整数。否则我会得到奇怪的结果。
function makeUpDates(){
// concantenate values to date_start and date_end hidden inputs
var dateString = document.getElementById('date').value,
date = new Date(dateString);
alert (date);
document.getElementById('date_start').value = date.getFullYear() + '-' + (date.getMonth()+1) + '-' + date.getDate();
var numDays = document.getElementById('slider').value;
date.setDate(date.getDate() + parseInt(numDays));
var dateEnd = date.getFullYear() + '-' + (date.getMonth()+1) + '-' + date.getDate();
document.getElementById('date_end').value = dateEnd;
}
