javascript - AngularJS-Javascript在两个日期之间的天数(AngularJS - Javascript number of days between two dates)

Question

I have two dates that I get in the following format - that are returned from a web service:(我有以下两种格式的日期-从Web服务返回的日期：)

var dateone = "2016-08-21T07:00:00.000Z"; var datetwo = "2016-08-28T07:00:00.000Z"; var datediff = datetwo - dateone; var numdays = Math.round(datediff); console.log("Number of Days is " + numdays); I get NaN .(我得到NaN 。) What am I missing here?(我在这里想念什么？)   ask by techwestcoastsfosea translate from so

Answer 1

Your dateone and datetwo variables are String s not Date s.(您的dateone和datetwo变量是String而不是Date 。)

Try this:(尝试这个：) var dateone = new Date("2016-08-21T07:00:00.000Z"); var datetwo = new Date("2016-08-28T07:00:00.000Z"); Also, substracting 2 Date s objects will give you the difference between them in milliseconds, if you want to determine the number of days, you can do something like this:(同样，减去2 Date对象将为您提供它们之间的差（以毫秒为单位），如果要确定天数，则可以执行以下操作：) var dayDif = (datetwo - dateone) / 1000 / 60 / 60 / 24;