我正在编写一些基于下拉选择表单显示或隐藏日历的代码。我已将它设置为在下拉选择中运行我的 showHideCalendar() 函数作为 onchange 操作。当我更改所选选项时，我收到“预期对象”错误。我已经包含了相关的 HTML 和 JavaScript 代码。
<script type="text/javascript" language="javascript">
function showHideCalendar(element) {
document.getElementById("calendar").style.display = "none";
if (document.getElementById("dropdown").selectedIndex === 13) {
cal5.popup();
document.getElementById("textField").value = "";
document.getElementById("calendar").style.display = "inline";
}
}
</script>
<FORM NAME='Labs' METHOD='POST' ACTION="">
<select id="dropdown" name='TimeFrame0' onchange='showHideCalendar(document.Labs.TimeFrame0)'>
<option value='NoReorder'>Do Not Reorder</option>
<option value='2012-06-14 08:40:39.067'>Today</option>
<option value='2012-06-21 08:40:39.067'>1 Week</option>
<option value='2012-06-28 08:40:39.067'>2 Weeks</option>
<option value='2012-07-05 08:40:39.067'>3 Weeks</option>
<option value='2012-07-12 08:40:39.067'>4 Weeks</option>
<option value='2012-07-26 08:40:39.067'>6 Weeks</option>
<option value='2012-07-14 08:40:39.067' selected>1 Month</option>
<option value='2012-08-14 08:40:39.067'>2 Months</option>
<option value='2012-09-14 08:40:39.067'>3 Months</option>
<option value='2012-10-14 08:40:39.067'>4 Months</option>
<option value='2012-12-14 08:40:39.067'>6 Months</option>
<option value='2013-03-14 08:40:39.067'>9 Months</option>
<option value='custom' id='custom'>Calendar Select</option>
</select>
<div id='calendar' style='display:inline'>
<input type=text name='StartDate' value='' size=20 onchange='inputChanged()' onkeydown='inputChanged()' onblur='inputChanged()' id='textField'>
<a href='javascript:cal5.popup();' onmousedown='inputChanged()'> <img src='/jscalendar/img/cal.gif' width='16' height='16' border='0' alt='Click Here to Pick up the date'></a>
</div>
<input type=checkbox name=SameDate value='on' checked onClick='SetTimeFrame(document.Labs.TimeFrame0)'> Use Same Date For All Labs
<input class='btnsave' type=button name=Save value='Reorder Labs' onClick=javascript:document.Labs.action='/LabReview/Reorder.php?PROV=PROVID&MaxCount=2&Text=1';document.Labs.submit();>
<input class='btncancel' type=button name=Cancel value=Cancel onClick=javascript:top.window.close()>
</FORM>
有没有人看到这不起作用的任何原因。错误被抛出就行了<select id="dropdown" name='TimeFrame0' onchange='showHideCalendar(document.Labs.TimeFrame0)'>。
其中一位回答者认为错误不在我的新代码中，而是页面上的其他内容。我正在编辑我的问题以添加页面上的其余 javascript。
<script type="text/javascript" language="javascript">
function showHideCalendar(element) {
document.getElementById("calendar").style.display = "none";
if (document.getElementById("dropdown").selectedIndex === 13) {
cal5.popup();
document.getElementById("textField").value = "";
document.getElementById("calendar").style.display = "inline";
}
}
function inputChanged() {
document.getElementById("dropdown").selectedIndex = 13;
}
function SetTimeFrame(element)
{
if (document.Labs.SameDate.checked==true)
{
var Elements=document.Labs.elements.length;
for (var i=0; i<Elements; i++)
{
if (document.Labs.elements[i].type=='select-one')
{
document.Labs.elements[i].options[element.selectedIndex].selected=true;
}
}
}
}
if (top.window.opener.document.getElementById("Complete<?php echo($_GET['Item']); ?>"))
{
if ('<?php echo($Reviewed); ?>' == 'yes')
{
window.opener.document.getElementById("Complete<?php echo($_GET['Item']); ?>").style.visibility='visible';
window.opener.document.getElementById("Partial<?php echo($_GET['Item']); ?>").style.visibility='hidden';
}
else if ('<?php echo($Reviewed); ?>' == 'partial')
{
window.opener.document.getElementById("Partial<?php echo($_GET['Item']); ?>").style.visibility='visible';
window.opener.document.getElementById("Complete<?php echo($_GET['Item']); ?>").style.visibility='hidden';
}
}
else
{
var temp=top.window.opener.location.href;
top.window.opener.location.href=temp;
top.window.opener.top.window.location.reload();
}
function DateCheck(element)
{
var xx = element.value;
var re = new RegExp("^[0-9][0-9]/[0-9][0-9]/[0-9][0-9][0-9][0-9]$");
var re2 = new RegExp("^[0-9]/[0-9][0-9]/[0-9][0-9][0-9][0-9]$");
var re3 = new RegExp("^[0-9][0-9]/[0-9]/[0-9][0-9][0-9][0-9]$");
var re4 = new RegExp("^[0-9]/[0-9]/[0-9][0-9][0-9][0-9]$");
var error = "";
var maxdays = new Array(0,31,29,31,30,31,30,31,31,30,31,30,31);
var retval = true;
if(element.value != "")
{
if(xx.search(re) < 0 && xx.search(re2) < 0 && xx.search(re3) < 0 && xx.search(re4) < 0)
{
error = "Invalid Date Format " + xx + ". Please enter dates in the format mm/dd/yyyy."
retval = false;
element.value = ""
}
else
{
var list = xx.split("/");
var month = list[0];
if(month.charAt(0) == "0")
month = month.substr(1);
if( list[0] < 1 || list[0] > 12)
{
error = "Invalid Month " + list[0];
retval = false;
element.value = ""
}
else
if(list[1] < 1 || list[1] > maxdays[month])
{
error = "Invalid Day " + list[1];
retval = false;
element.value = ""
}
else
if(list[2] < 1900)
{
error = "Invalid Year (Must be greater than 1900) " + list[2];
retval = false;
element.value = ""
}
}
if(!retval)
alert(error);
return retval;
}
}
</script>