获取今日之前7or30天

一个小渣渣۶

于 2019-06-19 14:32:30 发布

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分类专栏：杂乱文章标签： js

本文链接：https://blog.youkuaiyun.com/qq_43526066/article/details/92830719

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获取今日之前7or30天

function getDaysBefore(dateNum) {
  var date = new Date(new Date()),
    timestamp, newDate;
  if (!(date instanceof Date)) {
    date = new Date(date.replace(/-/g, '/'));
  }
  timestamp = date.getTime();
  newDate = new Date(timestamp - dateNum * 24 * 3600 * 1000);
  let Month = newDate.getMonth() + 1;
  Month = Month >= 10 ? Month : '0' + Month;
  let d = newDate.getDate();
  d = d >= 10 ? d : '0' + d
  return [
    [newDate.getFullYear(), Month, d].join('-'), //[newDate.getHours(), newDate.getMinutes(), newDate.getSeconds()].join(':')
  ].join(' ');

}

getDaysBefore(6)
getDaysBefore(29)