急救！！！日期select...

[oldjackyone]

<select name="Year"></select><select name="Month"></select><select name="Day"></select>
<script language="Javascript">
function loadDataSelect( yearSelect, monthSelect, daySelect )
{
var beginYear = new Date();
var tYear = new Date();
var endYear = new Date();
beginYear = beginYear.getYear() - 5;
endYear = endYear.getYear() + 5;
for( beginYear ; beginYear < endYear; ++beginYear )
{
var selectOption = new Option( beginYear, beginYear );
if ( selectOption.value == tYear.getYear() )
selectOption.selected = true;//为何刷新过后selected的年份是２００３，而不是２００４？
//为何刷新过后selected的年份是２００３，而不是２００４？

//为何刷新过后selected的年份是２００３，而不是２００４？

//为何刷新过后selected的年份是２００３，而不是２００４？

//为何刷新过后selected的年份是２００３，而不是２００４？

yearSelect.add( selectOption );
}
}
loadDataSelect(document.getElementById("Year"), document.getElementById("Month"), document.getElementById("Day"));

</script>

[dsclub]

一个逻辑问题嘛，这样就OK了

<select name="Year" ID="Select1"></select><select name="Month" ID="Select2"></select><select name="Day" ID="Select3"></select>
<script language="Javascript">
function loadDataSelect( yearSelect, monthSelect, daySelect )
{
var beginYear = new Date();
var tYear = new Date();
var endYear = new Date();
beginYear = beginYear.getYear() - 5;
endYear = endYear.getYear() + 5;

for( beginYear ; beginYear < endYear; ++beginYear )
{
var selectOption = new Option( beginYear, beginYear );
yearSelect.add( selectOption );
if ( selectOption.value == tYear.getYear() )
selectOption.selected = true;//为何刷新过后selected的年份是２００３，而不是２００４？
}
}
loadDataSelect(document.getElementById("Year"), document.getElementById("Month"), document.getElementById("Day"));

</script>

[oldjackyone]

yearSelect.add( selectOption );
if ( selectOption.value == tYear.getYear() )
selectOption.selected = true;//为何刷新过后selected的年份是２００３，而不是２００４？


对于这个问题，在增加了一个元素后，还能利用它来修改它的属性值？...

[dsclub]

可是指针没有变呀！
指向的地址是正确的！

[oldjackyone]

那如果我把yearSelect.add( selectOption );放到if 后面，怎么就会有错了？

始终想不通。