vue3获取日期近三天分别是周几

// 获取星期

const getDay = (day) => {

var nowDate = new Date();

var targetday_milliseconds =

nowDate.getTime() + 1000 * 60 * 60 * 24 * day;

nowDate.setTime(targetday_milliseconds);

const weekArr = ["周日", "周一", "周二", "周三", "周四", "周五", "周六"];

return weekArr[nowDate.getDay()];

};

直接传参数即可1是今天2是明天3是后天等等……  支持负数