jQuery实现日期联动效果实例

时间:2020-05-15 轩脉刃人气:0
本文实例讲述了jQuery实现日期联动效果的方法。分享给大家供大家参考，具体如下：
实现目标：
两个日期，有下拉框：
<head>
//导入jquery地址
<script src="jquery-1.7.2.min.js" language="JavaScript" type="text/javascript"></script>
<script type="text/javascript">
//startYear发生变化
function changeYear(str,isstart)
{
  var pre = "start";
  if(isstart == false)
  {
    pre = "end";
  }
  var startMonth = $(pre + "Month").value;
  if(startMonth == "")
  {
    var e = $(pre + "Month");
    optionClear(e);
    return;
  }
  var n = MonHead[startMonth - 1];
  if(startMonth == 2 && IsPinYear($(pre + "Year").value))
  {
    n++;
  }
  writeDay(n,pre);
}
function changeMonth(str,isstart)
{
  var pre = "start";
  if(isstart == false)
  {
    pre = "end";
  }
  var year = $(pre + "Year").value;
  if(year == "")
  {
    var e = $(pre + "Day");
    optionClear(e);
    return;
  }
  var n = MonHead[str - 1];
  if(str == 2 && IsPinYear($(pre + "Year")))
  {
    n++;
  }
  writeDay(n,pre);
}
function dateStart()
{
  var defaultStartY = "2011";
  var defaultStartM = "1";
  var defaultStartD = "14";
  var defaultEndY = "2011";
  var defaultEndM = "2";
  var defaultEndD = "23";
  MonHead = [31,28,31,30,31,30,31,31,30,31,30,31];
  var prestr = new Array("start","end");
  for(var j=0; j<2; j++)
  {
    var pre = prestr[j];
    //start 年
    var y = new Date().getFullYear();
    if(pre == "start")
    {
      //start初始选中前第10天
      var i_index = 0;
      for(var i=(y-10); i<=y; i++)
      {
        $(pre+"Year").options.add(new Option(""+i+"",i));
        if(i == defaultStartY)
        {
          $(pre+"Year").options[i_index].selected = true;
        }
        i_index++;
      }
    }
    else
    {
      var i_index =0;
      for(var i=(y-5); i<=y+5; i++)
      {
        $(pre+"Year").options.add(new Option(""+i+"",i));
        if(i == defaultEndY)
        {
          $(pre+"Year").options[i_index].selected = true;
        }
        i_index++;
      }
    }
    //start月
    defaultM = (pre == "start" ? defaultStartM : defaultEndM)
    for(var i = 1; i < 13; i++)
    {
      $(pre + "Month").options.add(new Option(""+i+"",i));
      if(i == defaultM)
      {
        $(pre + "Month").options[i-1].selected = true;
      }
    }
    //start日
    var n = MonHead[$(pre + "Month").value];
    if(new Date().getMonth == 1 && IsPinYear($(pre + "Year").value))
    {
      n++;
    }
    defaultD = (pre == "start" ? defaultStartD : defaultEndD)
    writeDay(n,pre);
    $(pre + "Day").options[defaultD-1].selected = true;
  }
}
function writeDay(n,pre)
{
  var e = $(pre + "Day");
  optionClear(e);
  for (var i=1; i<(n+1); i++)
  {
    e.options.add(new Option(""+i+"",i));
  }
}
function IsPinYear(year)
{
  return (0 == year%4 && (year%100 != 0 || year % 4 == 0));
}
function optionClear(e)
{
  for(var i=e.options.length; i>=0; i--)
  {
    e.remove(i);
  }
}
</script>
</head>
<body onload="dateStart()">
<p name="selectdate">
    从
    <select id="startYear" name="startYear" onchange="changeYear(this.value,true)">
    </select>
    年
    <select id="startMonth" name="startMonth" onchange="changeMonth(this.value,true)">
    </select>
    月
    <select id="startDay" name="startDay">
    </select>
    日
    到
    <select id="endYear" name="endYear" onchange="changeYear(this.value,false)">
    </select>
    年
    <select id="endMonth" name="endMonth" onchange="changeMonth(this.value,false)">
    </select>
    月
    <select id="endDay" name="endDay">
    </select>
    日
</p>
</body>
参考了一些代码，终于能实现了~~
希望本文所述对大家jQuery程序设计有所帮助。
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