获取昨天，上个月，过去7天，过去14天，过去N天都可以等

标签：天都 14 过去 mon year var day getDate

过去N天,爽得一批

//过去7天，过去14天，过去30天   想要过去几天参数就传几就行了 
getBeforeDate(n) {
      var n = n;
      var d = new Date();
      var year = d.getFullYear();
      var mon = d.getMonth() + 1;
      var day = d.getDate();
      if (day <= n) {
        if (mon > 1) {
          mon = mon - 1;
        } else {
          year = year - 1;
          mon = 12;
        }
      }
      d.setDate(d.getDate() - n);
      year = d.getFullYear();
      mon = d.getMonth() + 1;
      day = d.getDate();
      let s =
        year +
        "-" +
        (mon < 10 ? "0" + mon : mon) +
        "-" +
        (day < 10 ? "0" + day : day);
      return s;
    },


//

console.log(this.getBeforeDate(1),'88888')  // 2023-03-02 console.log(this.getBeforeDate(5),'88888') //  2023-02-26

 

标签：天都,14,过去,mon,year,var,day,getDate
From： https://www.cnblogs.com/myfirstboke/p/17174945.html