用javascript怎么取到当前月第一天、最后一天，本周第一天、最后一天

用javascript怎么取到当前月第一天、最后一天，本周第一天、最后一天 问题点数：50、回复次数：8Top

1 楼hbhbhbhbhb1021（天外水火(我要多努力)）回复于 2006-03-01 15:56:45 得分 50

<script   language=javascript>  
  function   showWeekFirstDay()  
  {  
  var   Nowdate=new   Date();  
  var   WeekFirstDay=new   Date(Nowdate-(Nowdate.getDay()-1)*86400000);  
  alert(WeekFirstDay)  
  }  
  function   showWeekLastDay()  
  {  
  var   Nowdate=new   Date();  
  var   WeekFirstDay=new   Date(Nowdate-(Nowdate.getDay()-1)*86400000);  
  var   WeekLastDay=new   Date((WeekFirstDay/1000+6*86400)*1000);  
  alert(WeekLastDay)  
  }  
  function   showMonthFirstDay()  
  {  
  var   Nowdate=new   Date();  
  var   MonthFirstDay=new   Date(Nowdate.getYear(),Nowdate.getMonth(),1);  
  alert(MonthFirstDay)  
  }  
  function   showMonthLastDay()  
  {  
  var   Nowdate=new   Date();  
  var   MonthNextFirstDay=new   Date(Nowdate.getYear(),Nowdate.getMonth()+1,1);  
  var   MonthLastDay=new   Date(MonthNextFirstDay-86400000);  
  alert(MonthLastDay)  
  }  
  </script>  
  <input   name=haha   type=button   value="本周第一天"   onclick=showWeekFirstDay()>  
  <input   name=haha   type=button   value="本周第七天"   onclick=showWeekLastDay()>  
  <input   name=haha   type=button   value="本月第一天"   onclick=showMonthFirstDay()>  
  <input   name=haha   type=button   value="本月最后一天"   onclick=showMonthLastDay()>Top

2 楼aniude（重返荣耀）回复于 2006-03-01 16:05:52 得分 0

var   date   =   new   Date();  
  用date.getDay()和date.getDate()分别获取今天星期几和月的几号  
  然后在针对这个月的月份进行判断Top

3 楼aniude（重返荣耀）回复于 2006-03-01 16:31:57 得分 0

学习了Top

4 楼tianjiao99（天骄）回复于 2006-03-01 16:51:58 得分 0

hbhbhbhbhb1021(天外水火(我要多努力))    
  怎么把提示的时间转换成本地时间呢？Top

5 楼tianjiao99（天骄）回复于 2006-03-01 16:56:52 得分 0

转换成“yyyy-mm-dd”形式的Top

6 楼aniude（重返荣耀）回复于 2006-03-01 17:00:40 得分 0

getYear()   获取:年  
  getMonth()         月  
  getDate()           日Top

7 楼tianjiao99（天骄）回复于 2006-03-01 17:04:39 得分 0

加“.getDate()”就转换为本地时间了Top

8 楼hbhbhbhbhb1021（天外水火(我要多努力)）回复于 2006-03-01 17:06:14 得分 0

<script   language=javascript>  
  function   showWeekFirstDay()  
  {  
  var   Nowdate=new   Date();  
  var   WeekFirstDay=new   Date(Nowdate-(Nowdate.getDay()-1)*86400000);  
  alert(WeekFirstDay)  
  }  
  function   showWeekLastDay()  
  {  
  var   Nowdate=new   Date();  
  var   WeekFirstDay=new   Date(Nowdate-(Nowdate.getDay()-1)*86400000);  
  var   WeekLastDay=new   Date((WeekFirstDay/1000+6*86400)*1000);  
  alert(WeekLastDay)  
  }  
  function   showMonthFirstDay()  
  {  
  var   Nowdate=new   Date();  
  var   MonthFirstDay=new   Date(Nowdate.getYear(),Nowdate.getMonth(),1);  
  alert(MonthFirstDay)  
  }  
  function   showMonthLastDay()  
  {  
  var   Nowdate=new   Date();  
  var   MonthNextFirstDay=new   Date(Nowdate.getYear(),Nowdate.getMonth()+1,1);  
  var   MonthLastDay=new   Date(MonthNextFirstDay-86400000);  
  alert(MonthLastDay)  
  }  
  function   Date.prototype.toString(){  
  return   this.getFullYear()+"年"+(this.getMonth()+1)+"月"+this.getDate()+"日";  
  }  
  </script>  
  <input   name=haha   type=button   value="本周第一天"   onclick=showWeekFirstDay()>  
  <input   name=haha   type=button   value="本周第七天"   onclick=showWeekLastDay()>  
  <input   name=haha   type=button   value="本月第一天"   onclick=showMonthFirstDay()>  
  <input   name=haha   type=button   value="本月最后一天"   onclick=showMonthLastDay()>Top

相关问题

• javascript
• 转换
• date
• javascript怎么取
• 月
• getdate
• 最后一
• 获取
• 到当前
• 时间

• 帖主：tianjiao99
• hbhbhbhbhb1021

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