Get the date after 7 days or the date within 7 days (JS)

let today = new Date()   //获取今天的日期
let date2 = new Date(today);  
let dateArray = []

date2.setDate(today.getDate() + 7)  //获取7天以后的日期

for(let i = 0; i < 7; i++){
    
    
  date2.setDate(today.getDate() + i)
  dateArray.push(everyDay)  //获取未来7天内的日期
}

Knowledge points:

setDate(): Set a certain day of a month
For example: d.setDate(15) represents the 15th day of the query month.
Link: https://www.runoob.com/jsref/jsref-setdate.html