获取今天，昨天，本周，上周，本月，上月时间

//获取今天 var nowDate= new Date(); //当天日期 console.log(nowDate); //今天是本周的第几天 var nowDayOfWeek= nowDate.getDay(); console.log(nowDayOfWeek); //当前日 var nowDay = nowDate.getDate(); console.log(nowDay); //当前月

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