Question

我有一个代表日期的字符串。我将它变成日期对象并提前一个月计算另一个日期。然后我想计算它们之间的天数差异，但我不知道为什么两者都变得相同而最终的冲击总是为零。我该怎么办？

        var dateString = '2017-08-03';
        var dateFrom = new Date(dateString);
		console.log(dateFrom); //Thu Aug 03 2017 02:00:00 GMT+0200 (CEST)
		var dateTo = new Date(dateFrom.setMonth(dateFrom.getMonth()+1));

		console.log(dateTo); //Sun Sep 03 2017 02:00:00 GMT+0200 (CEST) (one month later)

		console.log(dateFrom); //Sun Sep 03 2017 02:00:00 GMT+0200 (CEST)// (two dates turn into the same)
		var difference = Math.floor((dateTo - dateFrom) / 86400000); // 0

Answer 1

正在发生这种情况，因为在Sub Gender1() ' ' Gender1 Macro ' ' =IF(A2="Male","M","F") Dim rCell As Range Dim rRng As Range Set rRng = Range("A2", Range("A2").End(xlDown)) For Each rCell In rRng.Cells If rCell.Value = "Male" Then result = "M" rCell.Offset(0, 5).Select ActiveCell.Value = result ElseIf rCell.Value = "Female" Then result = "F" rCell.Offset(0, 5).Select ActiveCell.Value = result Else result = "NULL" rCell.Offset(0, 5).Select ActiveCell.Value = result End If Next rCell End Sub中您实际上通过设置更改dateFrom是月份到下个月。你可以做这样的事情。

var dateTo = new Date(dateFrom.setMonth(dateFrom.getMonth()+1))

Answer 2

但我不知道为什么两者都变得相同而且最终结果总是为零。

答案在线下

2017/08/03 11:28:26 [warn] 13799#0: *5 [lua] aescbc.lua:18: decrypt cipherBytes [9756eecad1842f844a6bf45ecc89d0ddd271bccb4bea7c84db04e2ed5ca84b8c] failed, client: 127.0.0.1, server: , request: "GET /aescbc HTTP/1.1", host: "127.0.0.1:8080"

您正尝试设置从月开始的月份，然后使用此更新日期创建新日期。如果你想达到欲望的结果，你可以使用下面的脚本。

dateFrom.setMonth(dateFrom.getMonth()+1)

Javascript - 从另一个生成日期并计算它们之间的天数

2 个答案: