const curDate = new Date();//获取当前时间 var datetime = new Date(curDate.getTime() - 24*60*60*1000); //获取前一天的时间 var year=datetime.getFullYear(); //获取当前年份 var month=datetime.getMonth()+1; //获取当前月份 if(month<=9){ month="0"+month; } var date=datetime.getDate(); //获取当前时间 if(date<=9){ date="0"+date; }
cosnt startDate = year+"-"+month+"-"+date
输出结果:2021-04-05