我有一个表单，我无法控制要编辑的php。我需要它，以便当它发送值时它发送项目的描述，但我需要值来添加总字段的价格。有没有办法设置，所以我可以发送项目的描述但仍然保持值为数字，所以它增加了总数？
<div id="cid_7" class="form-input">
<select class="form-dropdown validate[required]" onchange="code(1)" style="width:150px" id="input_7" name="q7_ticketOptions">
<option> </option>
<option value="300"> VIP Floor Seats - $300.00 </option>
<option value="40"> Section 101 Upper Level - $40.00 </option>
<option value="60"> Section 101 Mid Level - $60.00 </option>
<option value="150"> Section 101 Lower Level - $150.00 </option>
<option value="40"> Section 102 Upper Level - $40.00 </option>
<option value="60"> Section 102 Mid Level - $60.00 </option>
<option value="150"> Section 102 Lower Level - $150.00 </option>
<option value="40"> Section 103 Upper Level - $40.00 </option>
<option value="60"> Section 103 Mid Level - $60.00 </option>
<option value="150"> Section 103 Lower Level - $150.00 </option>
<option value="20"> Section 104 Upper Level - $20.00 </option>
<option value="60"> Section 104 Mid Level - $60.00 </option>
<option value="20"> Section 107 Upper Level - $20.00 </option>
<option value="60"> Section 107 Mid Level - $60.00 </option>
<option value="40"> Section 108 Upper Level - $40.00 </option>
<option value="60"> Section 108 Mid Level - $60.00 </option>
<option value="150"> Section 108 Lower Level - $150.00 </option>
<option value="40"> Section 109 Upper Level - $40.00 </option>
<option value="60"> Section 109 Mid Level - $60.00 </option>
<option value="150"> Section 109 Lower Level - $150.00 </option>
<option value="40"> Section 110 Upper Level - $40.00 </option>
<option value="60"> Section 110 Mid Level - $60.00 </option>
<option value="150"> Section 110 Lower Level - $150.00 </option>
<option value="40"> Section 111 Upper Level - $40.00 </option>
<option value="60"> Section 111 Mid Level - $60.00 </option>
<option value="150"> Section 111 Lower Level - $150.00 </option>
<option value="40"> Section 112 Upper Level - $40.00 </option>
<option value="60"> Section 112 Mid Level - $60.00 </option>
<option value="150"> Section 112 Lower Level - $150.00 </option>
<option value="20"> Section 113 Upper Level - $20.00 </option>
<option value="60"> Section 113 Mid Level - $60.00 </option>
<option value="40"> Section 114 Upper Level - $40.00 </option>
<option value="60"> Section 114 Mid Level - $60.00 </option>
<option value="40"> Section 115 Upper Level - $40.00 </option>
<option value="60"> Section 115 Mid Level - $60.00 </option>
<option value="20"> Section 116 Upper Level - $20.00 </option>
<option value="60"> Section 116 Mid Level - $60.00 </option>
<option value="40"> Section 117 Upper Level - $40.00 </option>
<option value="60"> Section 117 Mid Level - $60.00 </option>
<option value="150"> Section 117 Lower Level - $150.00 </option>
<option value="40"> Section 118 Upper Level - $40.00 </option>
<option value="60"> Section 118 Mid Level - $60.00 </option>
<option value="150"> Section 118 Lower Level - $150.00 </option>
</select>
</div>
</li>
<li class="form-line" id="id_23">
<label class="form-label-left" id="label_23" for="input_23"> Quantity<span class="form-required">*</span></label>
<div id="cid_23" class="form-input">
<select class="form-dropdown validate[required]" onchange="code(2)" style="width:150px" id="input_23" name="q23_quantity">
<option> </option>
<option value="1"> 1 </option>
<option value="2"> 2 </option>
<option value="3"> 3 </option>
<option value="4"> 4 </option>
<option value="5"> 5 </option>
<option value="6"> 6 </option>
<option value="7"> 7 </option>
<option value="8"> 8 </option>
<option value="9"> 9 </option>
<option value="10"> 10 </option>
</select>
</div>
</li>
<li class="form-line" id="id_22">
<label class="form-label-right" id="label_22" for="cost">Total $</label>
<div id="cid_22" class="form-input">
<input type="text" name="q22_total" id="cost" onfocus="this.blur()" style="width:50px"/>
</div>
</li>
这是Javasript：
<script type="text/javascript">
function code() { // forget the parameter
var varone = document.getElementById('input_7');
var vartwo = document.getElementById('input_23');
var cost = document.getElementById('cost');
var total = parseFloat(varone.value) * parseFloat(vartwo.value);
cost.value = total;
}
</script>
答案 0 :(得分：0)
如果您要在数据库中保存所有这些计算，那么首先应该创建一个表'ticket_options'，您应该在其中输入两列，例如
。“q7_ticketOptions”的第1列，“ticketRates”的第2列
<select class="form-dropdown validate[required]" onchange="code(1);,showUser(this.value);" style="width:150px" id="input_7" name="q7_ticketOptions">
<option selected="selected" disabled="disabled">Choose TicketOptions</option>
<?php
$sql=mysql_query("select * from ticket_options order by id ASC");
while($val=mysql_fetch_array($sql))
{
?>
<option> <?php print $val['q7_ticketOptions']; ?>
</option>
<?php } ?>
</select>
<div align="right" id="txtHint"><strong>Choose ticketOptions </strong></div>
在页面的head部分创建此功能：
<script>
function showUser(str)
{
if (str=="")
{
document.getElementById("txtHint").innerHTML="";
return;
}
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","getrate.php?q="+str,true);
xmlhttp.send();
}
</script>
<script>
然后创建一个php页面'getrate.php'。并写下这些代码：
<?php
$q=$_GET["q"];
$con = mysql_connect('localhost', 'root', '');
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("database", $con);
$sql="SELECT * FROM ticket_options WHERE q7_ticketOptions = '".$q."'";
$result = mysql_query($sql);
while($row = mysql_fetch_array($result))
{
?>
<input type="text" style="text-align:right" name="t_rate" value="<?php echo $row['ticketRates'] ; ?>" id="tax0" size="5" />
<?php
}
mysql_close($con);
?>
它是如何工作的：当您从选择框名称=“q7_ticketOptions”中选择选项时，它将在新框中显示票价，而不是使用下一个下拉名称=“q23_quantity”进行计算 希望它会对你有所帮助。