我试图将输入字段“full_day”上的用户输入乘以“var fullprice”，并在readonly输入字段“total_full”中显示结果我做错了什么导致它无法正常工作？
<div id="wrapper">
<div id="header"></div>
<table width="899" border="1" align="left" cellpadding="1">
<form action="" method="get" name="myform">
<tr>
<td width="275"><label>Company Name</label></td>
<td width="180"><input type="text" name="companyname" id="companyname" /></td>
<td width="27"> </td>
<td width="223">Enquiry Date</td>
<td width="160"><input type="text" name="enquiry_date" id="enquiry_date" class="datepicker" /></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Conference Date In</td>
<td><input type="text" name="conference_date_in" id="conference_date_in" class="datepicker" /></td>
<td> </td>
<td>Conference Date Out</td>
<td><input type="text" name="conference_date_out" id="conference_date_out" class="datepicker" /></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Number of Delegates</td>
<td><input type="text" name="no_of_delegates" id="no_of_delegates" /></td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<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 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> </td>
<td> </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> </td>
<td> </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> </td>
<td> </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> </td>
<td> </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> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
</form>
</table>
</div>
</body>
</html>
<script type="text/javascript">
$(function() {
$(".datepicker").datepicker({ minDate: -0, maxDate: "+100M +10D",dateFormat: 'dd-mm-yy'})
({
changeMonth: true,
changeYear: true,
});
});
var enquiry_date = $.datepicker.formatDate('dd-mm-yy', new Date());
document.getElementById('enquiry_date').value = enquiry_date;
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;
if(days==0) days=1
if( days >= 0 ) {
document.getElementById('total_days').value = days;
}
}
$('#conference_date_out').change(calcDate);
$('#conference_date_in').change(calcDate);
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);
function calculateFull()
{
var fulldays = document.getElementById("full_day").value;
var fullprice = 260;
var result = fulldays * fullprice;
document.getElementById("total_full").innerHTML = result;
}
$('#full_day').change(calculateFull);
</script>
答案 0 :(得分：0)
document.getElementByid("full_day").value返回一个字符串。您必须先将此字符串转换为数字，然后再将其与fullprice
var fulldays = parseInt(document.getElementById("full_day").value, 10);
并更改document.getElementById("total_full").innerHTML = result;
到document.getElementById("total_full").value = result;
答案 1 :(得分：0)
total_full是输入框，因此您应该设置值而不是innetHTML
document.getElementById("total_full").innerHTML = result;
document.getElementById("total_full").value = result;