getDate(startDate){ let newDate=new Date(startDate).getTime() - 1000*60*60*24 let date = new Date(newDate); let y= date.getFullYear() let m=(data.getMonth() + 1 + "").padStart(2,"0") let m=(data.getDate() + 1 + "").padStart(2,"0") return [y,m,d].join("-") }