如何在日期选择器中选择日期之前防止 isNaN
how to prevent isNaN before dates are selected in Datepicker
我想防止 NaN 出现在这些文本框中："total_full"、"total_half"、"total_single"。 我尝试将所有计算/数字字段的初始值设置为"0"，但在选择"check_out"日期并更新total_days_acc之前，"total_single"仍然是 NaN？
我不确定我应该在这里放多少代码，我不想遗漏一些重要的东西，所以这里有一个问题的链接，我错误地发布了"所有"编码。 :
根据输入值隐藏/显示字段
谢谢
<td>Accommodation:</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><p>Check in Date</p></td>
<td><input type="text" name="check_in_date" id="check_in_date" class="datepicker" /></td>
<td><p> </p></td>
<td><p>Check out Date</p></td>
<td><p>
<input type="text" name="check_out_date" id="check_out_date" class="datepicker" />
</p></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
<td>Total Days Accommodation</td>
<td><input type="text" name="total_days_acc" id="total_days_acc" /></td>
</tr>
<tr>
<td>Number of Rooms:</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Single</td>
<td><input type="text" name="no_of_rooms_single" id="no_of_rooms_single" /></td>
<td> </td>
<td>Double / Twin</td>
<td><input type="text" name="no_of_rooms_double" id="no_of_rooms_double" /></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Contact Person</td>
<td><input type="text" name="contact_person" id="contact_person" /></td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Telephone Number</td>
<td><input type="text" name="tel_no" id="tel_no" /></td>
<td> </td>
<td>Fax Number</td>
<td><input type="text" name="fax_no" id="fax_no" /></td>
</tr>
<tr>
<td>Cell Number</td>
<td><input type="text" name="cell_no" id="cell_no" /></td>
<td> </td>
<td>Email</td>
<td><input type="text" name="email" id="email" /></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Full Day Conference @ R260.00 p/p</td>
<td><input type="text" name="full_day" id="full_day" /></td>
<td> </td>
<td>Total Cost Full Day</td>
<td><input type="text" name="total_full" id="total_full" readonly="readonly" /></td>
</tr>
<tr>
<td>Half Day Conference @ R240.00 p/p</td>
<td><input type="text" name="half_day" id="half_day" /></td>
<td> </td>
<td>Total Cost Half Day</td>
<td><input type="text" name="total_half" id="total_half" readonly="readonly" /></td>
</tr>
<tr>
<td>Single Rooms @ R480.00 p/p</td>
<td><input type="text" name="single_rooms" id="single_rooms" /></td>
<td> </td>
<td>Total Cost Single Rooms</td>
<td><input name="total_single" type="text" id="total_single" readonly="readonly" /></td>
</tr>
<tr>
<td>Double / Twin Rooms @ R720.00 p/p</td>
<td><input type="text" name="double_rooms" id="double_rooms" /></td>
<td> </td>
<td>Total Cost Double / Twin</td>
<td><input name="total_double" type="text" id="total_double" readonly="readonly" /></td>
</tr>
<tr>
<td>Data Projector @ R400.00 rental p/day</td>
<td><input type="text" name="data_proj" id="data_proj" /></td>
<td> </td>
<td>Total Cost Projector Rental</td>
<td><input name="total_project" type="text" id="total_project" readonly="readonly" /></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Sub Total</td>
<td><input type="text" name="sub_total" id="sub_total" /></td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td height="23"> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
</form>
</table>
</div>
<div id="hideme">
Hello Hideme
</div>
<p> </p>
<p> </p>
</body>
</html>
<script type="text/javascript">
//Datepicker
$(function() {
$(".datepicker").datepicker({ minDate: -0, maxDate: "+100M +10D",dateFormat: 'dd-mm-yy'})
({
changeMonth: true,
changeYear: true,
});
});
//Datepicker Enquiry Date Set to Today
var enquiry_date = $.datepicker.formatDate('dd-mm-yy', new Date());
document.getElementById('enquiry_date').value = enquiry_date;
//Datepicker Conference in / out
var calcDate = function() {
var start = $('#conference_date_in').datepicker('getDate');
var end = $('#conference_date_out').datepicker('getDate');
var days = (end - start) / 1000 / 60 / 60 / 24 + 1;
if(days==0) {days=1
}
if( days >= 0 ) {
document.getElementById('total_days').value = days;
}
}
$('#conference_date_out').change(calcDate);
$('#conference_date_in').change(calcDate);
//Datepicker Check in / Out Accommodation
var calcDateAcc = function() {
var startacc = $('#check_in_date').datepicker('getDate');
var endacc = $('#check_out_date').datepicker('getDate');
var daysacc = (endacc - startacc) / 1000 / 60 / 60 / 24;
if(daysacc==0) daysacc=1
if( daysacc >= 0 ) {
document.getElementById('total_days_acc').value = daysacc;
}
}
$('#check_in_date').change(calcDateAcc);
$('#check_out_date').change(calcDateAcc);
//Calculate Total Cost FullDay Conference
function calculateFull()
{
var fulldays = parseInt(document.getElementById("full_day").value);
var no_of_delegates = parseInt(document.getElementById("no_of_delegates").value);
var fullprice = 260;
var resultfull = fulldays * no_of_delegates * fullprice;
document.getElementById("total_full").value = resultfull;
}
$('#full_day').change(calculateFull).keyup(calculateFull);
//Calculate Half Day conference total
function calculateHalf()
{
var halfdays = parseInt(document.getElementById("half_day").value);
var no_of_delegates = parseInt(document.getElementById("no_of_delegates").value);
var halfprice = 240;
var resulthalf = halfdays * no_of_delegates * halfprice;
document.getElementById("total_half").value = resulthalf;
}
$('#half_day').change(calculateHalf).keyup(calculateHalf);
//Calculate Total Cost Single Rooms
function calculateSingle()
{
var single_rooms = parseInt(document.getElementById("single_rooms").value);
var total_days_acc = parseInt(document.getElementById("total_days_acc").value);
var single_rooms_price = 480;
var resultsingle = single_rooms * total_days_acc * single_rooms_price;
document.getElementById("total_single").value = resultsingle;
}
$('#single_rooms').change(calculateSingle).keyup(calculateSingle);
$('#check_in_date').change(calculateSingle);
$('#check_out_date').change(calculateSingle);
//Hide me Testing
$("#full_day").keyup(function(){
if ($('#full_day').val() == "1") {
$("#hideme").show("fast"); //Slide Down Effect
}
else {
$("#hideme").hide("fast"); //Slide Up Effect
}
});
</script>
不要只是将值插入页面，只需执行以下操作：
document.getElementById("total_days").value = isNaN(days) ? 0 : days;
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