如何从JavaScript中的当前日期获取前6个月的日期

Question

我正在尝试从当前日期算起最近六个月的日期。

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但是我得到var d = new Date(); var months = ["January","February","March","April","May","June","July","August","September","October","November","December"]; alert(months[d.getMonth()-6]);

Answer 1

我总是建议使用日期库来协助这些类型的计算。大量支持和示例中最受欢迎的一种是moment.js（https://momentjs.com/）

要使用当前时刻从当前日期开始六个月前是

moment().subtract(6, 'months')

，然后打印月份名称为：

moment().subtract(6, 'months').format('MMMM')

Answer 2

var d = new Date();
var months = ["January","February","March","April","May","June","July","August","September","October","November","December"];
var monthName = months[new Date(d.setMonth(d.getMonth() - 6)).getMonth()];
console.log(monthName)

Answer 3

您必须像下面那样编写代码-

var d = new Date();
  var months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
  d.setMonth(d.getMonth() - 6);
  console.log(months[d.getMonth()]);

我们需要从日期对象中获取Month，然后将其设置为back（用-6），然后再获取。