js 获取昨天上周上个月上个季度的开始时间和结束时间

来源：互联网发布：java编程入门视频教程编辑：程序博客网时间：2024/05/20 06:29
<html>  <head>  <meta charset="utf-8">  <script type="text/javascript">      Date.prototype.format =function(format)      {      var o = {      "M+" : this.getMonth()+1, //month      "d+" : this.getDate(), //day      "h+" : this.getHours(), //hour      "m+" : this.getMinutes(), //minute      "s+" : this.getSeconds(), //second      "q+" : Math.floor((this.getMonth()+3)/3), //quarter      "S" : this.getMilliseconds() //millisecond      }      if(/(y+)/.test(format)) format=format.replace(RegExp.$1,      (this.getFullYear()+"").substr(4- RegExp.$1.length));      for(var k in o)if(new RegExp("("+ k +")").test(format))      format = format.replace(RegExp.$1,      RegExp.$1.length==1? o[k] :      ("00"+ o[k]).substr((""+ o[k]).length));      return format;      }        var dayMSec = 24 * 3600 * 1000;      var today = new Date();            //得到今天距离本周一的天数      function getDayBetweenMonday(){          //得到今天的星期数(0-6),星期日为0          var weekday = today.getDay();          //周日          if(weekday == 0){              return 6;          }else{              return weekday - 1;          }      }            function getLastDay(){                    var yestodayMSec=today.getTime() -dayMSec;                    var yestoday = new Date(yestodayMSec);                    document.getElementById("beginTime").value = yestoday.format('yyyy-MM-dd');          document.getElementById("endTime").value = yestoday.format('yyyy-MM-dd');      }            function getLastWeek(){          //得到距离本周一的天数          var weekdayBetween = getDayBetweenMonday();                    //得到本周星期一的毫秒值          var nowMondayMSec = today.getTime() - weekdayBetween * dayMSec;          //得到上周一的毫秒值          var lastMondayMSec = nowMondayMSec - 7 * dayMSec;          //得到上周日的毫秒值          var lastSundayMSec = nowMondayMSec - 1 * dayMSec;                    var lastMonday = new Date(lastMondayMSec);                    var lastSunday = new Date(lastSundayMSec);                              document.getElementById("beginTime").value = lastMonday.format('yyyy-MM-dd');          document.getElementById("endTime").value = lastSunday.format('yyyy-MM-dd');      }            function getLastMonth(){          //得到上一个月的第一天          var lastMonthFirstDay = new Date(today.getFullYear() , today.getMonth()-1 , 1);          //得到本月第一天          var nowMonthFirstDay = new Date(today.getFullYear() , today.getMonth(), 1);          //得到上一个月的最后一天的毫秒值          var lastMonthLastDayMSec = nowMonthFirstDay.getTime() - 1 * dayMSec;          var lastMonthLastDay = new Date(lastMonthLastDayMSec);                    document.getElementById("beginTime").value = lastMonthFirstDay.format('yyyy-MM-dd');          document.getElementById("endTime").value = lastMonthLastDay.format('yyyy-MM-dd');      }            function getLastQuarter(){          //得到上一个季度的第一天          var lastQuarterFirstDay = new Date(today.getFullYear() , today.getMonth() - 3 , 1);          //得到本月第一天          var nowMonthFirstDay = new Date(today.getFullYear() , today.getMonth(), 1);          //得到上一个季度的最后一天的毫秒值          var lastQuarterLastDayMSec = nowMonthFirstDay.getTime() - 1 * dayMSec;          var lastQuarterLastDay = new Date(lastQuarterLastDayMSec);                    document.getElementById("beginTime").value = lastQuarterFirstDay.format('yyyy-MM-dd');          document.getElementById("endTime").value = lastQuarterLastDay.format('yyyy-MM-dd');      }        </script>  </head>  <body>      <button type="button" onclick="getLastDay()">昨天</button>      <button type="button" onclick="getLastWeek()">上周</button>      <button type="button" onclick="getLastMonth()">上月</button>      <button type="button" onclick="getLastQuarter()">上季度</button>            <input id="beginTime" value="">      <input id="endTime" value="">  </body>  </html>
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js 获取昨天上周 上个月 上个季度的开始时间和结束时间

js 获取昨天上周上个月上个季度的开始时间和结束时间
