javascript版的日期输入控件(3)


displayCalendar(obj_month.innerText-1,obj_year.innerText);
  }
  function numberOfDays(month,year)  //取得每月天数,判断平年闰年
  {


    var numDays=new Array(31,28,31,30,31,30,31,31,30,31,30,31);
    n=numDays[month];
    if(month==1&&year%4==0) ++n;
    return n;
  }

  function displayCalendar(month,year)
  {

    var d=new Date(year,month,1);
    var startDay=d.getDay();   //日期起始数字
    var numDays=numberOfDays(month,year);  //本月天数
 
    var day=document.getElementsByName("day");
    for(var i=0;i<day.length;i++)
    {
     day[i].innerText="";
    }
    for(var j=1;j<=numDays;j++)  //插入日期
    {
      day[startDay+j-1].innerText=j;
    }
 
  }
  function writeDate(n)
  {
     document.writeln("<H3 ALIGN='CENTER'>"+n+"</H3>");
   }

  function add_day(year,month,day)
  {
     bd.birthdate.value=year+"-"+month+"-"+day;
  }
  </script>
  </HEAD>

   <BODY>
  <form name="bd">
  <input type="text" name="birthdate" size="20" readOnly><input type="button" value="..." onclick="showdb()">
  </form>
  <div id="input_birth" name="input_birth" style="visibility:hidden; width:239; height:128">
  <table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" style="cursor:hand" bordercolor="#111111" width="100%"  height="26">
    <tr>

 

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