代码如下

// 返回近 dayNum 天日期数组
getRecentDay(dayNum) {let currentDate = new Date();let dayNumDaysAgo = new Date(currentDate.getTime() - dayNum * 24 * 60 * 60 * 1000);let recentDays = [];for (let i = 0; i < dayNum; i++) {let date = new Date(dayNumDaysAgo.getTime() + i * 24 * 60 * 60 * 1000);let month = (date.getMonth() + 1).toString().padStart(2, "0");let day = date.getDate().toString().padStart(2, "0");recentDays.push(`${month}.${day}`);}return recentDays;
},

效果如下