javaScript 获取本周日期

//星期

function formatWeek(n){
      let myDate = new Date();
      let theDay=myDate.getDay()
      let week=['星期一','星期二','星期三','星期四','星期五','星期六','星期日']
      let year=myDate.getFullYear();
      let month=myDate.getMonth()+1;
      let day=myDate.getDate();
      return week[n]
}

//日期

function formatDay(AddDayCount) {
      let myDate = new Date();
      myDate.setDate(myDate.getDate()+AddDayCount);//设置当前日期加几天（减几天）
      let y = myDate.getFullYear();
      let m = myDate.getMonth()+1;
      let d = myDate.getDate();
      return y+"年"+m+"月"+d+"日";
}

for(let i=0;i<7;i++){
      let myDate = new Date();
      let theDay=myDate.getDay()
      if(i<theDay){
               if(i==theDay-1){
                        document.write(formatDay(i-(theDay-1))+'今天'+'............')
               }else{
                        document.write(formatDay(i-(theDay-1))+formatWeek(i)+'............')
               }
        }else {
                document.write(formatDay(i-(theDay-1))+formatWeek(i)+'............')
        }
}