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js获取当前周、上一周、下一周日期

程序员文章站 2023-11-10 21:10:34
效果图: 代码如下:

效果图:

js获取当前周、上一周、下一周日期

代码如下:

<!doctype html public "-//w3c//dtd html 4.01 transitional//en">
<html >
<head>
  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
  <title>日历操作</title>
  <script>
    window.onload = function(){     
      var cells = document.getelementbyid('monitor').getelementsbytagname('td');
      var clen = cells.length;
      var currentfirstdate;
      var formatdate = function(date){       
        var year = date.getfullyear()+'年';
        var month = (date.getmonth()+1)+'月';
        var day = date.getdate()+'日';
        var week = '('+['星期天','星期一','星期二','星期三','星期四','星期五','星期六'][date.getday()]+')'; 

        return year+month+day+' '+week;
      };
      var adddate= function(date,n){    
        date.setdate(date.getdate()+n);    
        return date;
      };
      var setdate = function(date){       
        var week = date.getday()-1;
        date = adddate(date,week*-1);
        currentfirstdate = new date(date);

        for(var i = 0;i<clen;i++){         
          cells[i].innerhtml = formatdate(i==0 ? date : adddate(date,1));
        }        
      };       
      document.getelementbyid('last-week').onclick = function(){
        setdate(adddate(currentfirstdate,-7));     
      };       
      document.getelementbyid('next-week').onclick = function(){         
        setdate(adddate(currentfirstdate,7));
      };   
      setdate(new date());
    }
  </script>
</head>
<body>
  <button id="last-week">上一周</button><button id="next-week">下一周</button>
  <table id="monitor">
    <tr>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
  </table>
</body>
</html>

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