计算订单不会给出结果
问题描述：
我正在尝试为客户创建一个订单，允许他的几个客户订购部件，表格计算总数并将其发送给他。在查看所有我想要的内容后，在另一个网站上浏览了一个教程。但是，在对代码进行一些更改并将其放置在我的服务器上进行测试之后，它无法正常工作。我没有对代码做任何特殊的处理，因为我想在添加66个项目之前测试它。我真的不知道任何关于PHP或JS的东西，可能真的在我的脑海里。这里的任何帮助将非常有帮助。计算订单不会给出结果
下面是HTML：
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Language" content="en-us">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>Order Form</title>
<script language="javascript">
<!--//
function dm(amount)
{
string = "" + amount;
dec = string.length - string.indexOf('.');
if (string.indexOf('.') == -1)
return string + '.00';
if (dec == 1)
return string + '00';
if (dec == 2)
return string + '0';
if (dec > 3)
return string.substring(0,string.length-dec+3);
return string;
}
function calculate()
{
QtyA = 0; QtyB = 0; QtyC = 0;
TotA = 0; TotB = 0; TotC = 0;
PrcA = 1.25; PrcB = 2.35; PrcC = 3.45;
if (document.ofrm.qtyA.value > "")
{ QtyA = document.ofrm.qtyA.value };
document.ofrm.qtyA.value = eval(QtyA);
if (document.ofrm.qtyB.value > "")
{ QtyB = document.ofrm.qtyB.value };
document.ofrm.qtyB.value = eval(QtyB);
if (document.ofrm.qtyC.value > "")
{ QtyC = document.ofrm.qtyC.value };
document.ofrm.qtyC.value = eval(QtyC);
TotA = QtyA * PrcA;
document.ofrm.totalA.value = dm(eval(TotA));
TotB = QtyB * PrcB;
document.ofrm.totalB.value = dm(eval(TotB));
TotC = QtyC * PrcC;
document.ofrm.totalC.value = dm(eval(TotC));
Totamt =
eval(TotA) +
eval(TotB) +
eval(TotC) ;
document.ofrm.GrandTotal.value = dm(eval(Totamt));
}
function validNum(theForm)
{
var checkOK = ".,";
var checkStr = theForm.qtyA.value;
var allValid = true;
var validGroups = true;
var decPoints = 0;
var allNum = "";
for (i = 0; i < checkStr.length; i++)
{
ch = checkStr.charAt(i);
for (j = 0; j < checkOK.length; j++)
if (ch == checkOK.charAt(j))
break;
if (j == checkOK.length)
{
allValid = false;
break;
}
if (ch == ".")
{
allNum += ".";
decPoints++;
}
else if (ch == "," && decPoints != 0)
{
validGroups = false;
break;
}
else if (ch != ",")
allNum += ch;
}
if (!allValid)
{
alert("Please enter only digit characters in the \"Class A quantity\" field.");
theForm.qtyA.focus();
return (false);
}
if (decPoints > 1 || !validGroups)
{
alert("Please enter a valid number in the \"Class A quantity\" field.");
theForm.qtyA.focus();
return (false);
}
var checkOK = ".,";
var checkStr = theForm.qtyB.value;
var allValid = true;
var validGroups = true;
var decPoints = 0;
var allNum = "";
for (i = 0; i < checkStr.length; i++)
{
ch = checkStr.charAt(i);
for (j = 0; j < checkOK.length; j++)
if (ch == checkOK.charAt(j))
break;
if (j == checkOK.length)
{
allValid = false;
break;
}
if (ch == ".")
{
allNum += ".";
decPoints++;
}
else if (ch == "," && decPoints != 0)
{
validGroups = false;
break;
}
else if (ch != ",")
allNum += ch;
}
if (!allValid)
{
alert("Please enter only digit characters in the \"Class B quantity\" field.");
theForm.qtyB.focus();
return (false);
}
if (decPoints > 1 || !validGroups)
{
alert("Please enter a valid number in the \"Class B quantity\" field.");
theForm.qtyA.focus();
return (false);
}
var checkOK = ".,";
var checkStr = theForm.qtyC.value;
var allValid = true;
var validGroups = true;
var decPoints = 0;
var allNum = "";
for (i = 0; i < checkStr.length; i++)
{
ch = checkStr.charAt(i);
for (j = 0; j < checkOK.length; j++)
if (ch == checkOK.charAt(j))
break;
if (j == checkOK.length)
{
allValid = false;
break;
}
if (ch == ".")
{
allNum += ".";
decPoints++;
}
else if (ch == "," && decPoints != 0)
{
validGroups = false;
break;
}
else if (ch != ",")
allNum += ch;
}
if (!allValid)
{
alert("Please enter only digit characters in the \"Class C quantity\" field.");
theForm.qtyC.focus();
return (false);
}
if (decPoints > 1 || !validGroups)
{
alert("Please enter a valid number in the \"Class C quantity\" field.");
theForm.qtyC.focus();
return (false);
}
calculate();
return (true);
}
//-->
</script>
</head>
<body>
<form method="POST" action="ordertest.php" name="Order_Form">
<p>Please tell us who you are (<font color="#FF0000">red</font> denotes
required information):</p>
<table border="0" cellpadding="0" width="550" id="table1">
<tr>
<td width="340" align="right"><font color="#FF0000">Name</font></td>
<td width="10"> </td>
<td width="200"><input type="text" name="Name" size="30" tabindex="1"></td>
</tr>
<tr>
<td width="340" align="right"><font color="#FF0000">Email</font>
(Your confirmation will be sent here): </td>
<td width="10"> </td>
<td width="200"><input type="text" name="Email" size="30" tabindex="1"></td>
</tr>
<tr>
<td width="340" align="right">Other Contact Info:</td>
<td width="10"> </td>
<td width="200"><input type="text" name="OtherInfo" size="30" tabindex="1"></td>
</tr>
<tr>
<td width="340" align="right"> </td>
<td width="10"> </td>
<td width="200"> </td>
</tr>
</table>
<p>And tell us what you would like:</p>
<table border="0" cellpadding="0" width="550" id="table2">
<tr>
<td width="250" height="31"><b>Item Description</b></td>
<td align="center" width="100" height="31"><b>Quantity</b></td>
<td align="right" height="31" width="60"><b>Price </b></td>
<td align="right" height="31" width="140"><b>Total</b></td>
</tr>
<tr>
<td width="250">Class "A" Widgets</td>
<td align="center" width="100">
<input type="text" name="qtyA" size="5" tabindex="5" onchange="return validNum(document.ofrm)"></td>
<td align="right" width="60">1.25</td>
<td align="right" width="140">
<input type="text" name="totalA" size="12" tabindex="99" onchange="calculate()"></td>
</tr>
<tr>
<td width="250">Class "B" Widgets</td>
<td align="center" width="100">
<input type="text" name="qtyB" size="5" tabindex="5" onchange="return validNum(document.ofrm)"></td>
<td align="right" width="60">2.35</td>
<td align="right" width="140">
<input type="text" name="totalB" size="12" tabindex="99" onchange="calculate()"></td>
</tr>
<tr>
<td width="250">Class "C" Widgets</td>
<td align="center" width="100">
<input type="text" name="qtyC" size="5" tabindex="5" onchange="return validNum(document.ofrm)"></td>
<td align="right" width="60">3.45</td>
<td align="right" width="140">
<input type="text" name="totalC" size="12" tabindex="99" onchange="calculate()"></td>
</tr>
<tr>
<td width="250"> </td>
<td align="center" width="100"> </td>
<td align="right" width="60"> </td>
<td align="right" width="140"> </td>
</tr>
<tr>
<td width="250">
<p align="right"><b>TOTALS:</b></p></td>
<td align="center" width="100"> </td>
<td align="right" width="60"> </td>
<td align="right" width="140">
<input type="text" name="GrandTotal" size="15" tabindex="99" onchange="calculate()"></td>
</tr>
<tr>
<td width="250"> </td>
<td align="center" width="100"> </td>
<td align="right" width="60"> </td>
<td align="right" width="140"> </td>
</tr>
</table>
<p> </p>
<table border="0" cellpadding="0" width="550" id="table3">
<tr>
<td width="563">
<p align="center">
<input type="submit" value="Submit" name="subButton" tabindex="50">
<input type="reset" value="Reset" name="resetButton" tabindex="50"></p></td>
</tr>
</table>
</form>
</body>
</html>
，这里是PHP文件：
<? PHP
//uncomment for debugging
//print_r($_POST);
//make sure there is data in the name and email fields
if(empty($_POST["Name"]))
{
$error["name"] = "Name is required.";
$Name = "";
}
else
$Name = $_POST["Name"];
if(empty($_POST["Email"]))
{
$error["email"] = "Email is required.";
$Email = "";
}
else
$Email = $_POST["Email"];
if(empty($_POST["OtherInfo"]))
{
$OtherInfo = "";
}
else
$OtherInfo = $_POST["OtherInfo"];
//check to make sure the qty fields are whole numbers
//but only check if there was data entered
if(!empty($_POST["qtyA"]))
{
if(is_numeric($_POST["qtyA"]) && (intval($_POST["qtyA"]) == floatval($_POST["qtyA"])))
{
//we have a whole number
}
else
$error["qtyA"] = "Please enter a whole number for Class A Widgets.";
}
if(!empty($_POST["qtyB"]))
{
if(is_numeric($_POST["qtyB"]) && (intval($_POST["qtyB"]) == floatval($_POST["qtyB"])))
{
//we have a whole number
}
else
$error["qtyB"] = "Please enter a whole number for Class B Widgets.";
}
if(!empty($_POST["qtyC"]))
{
if(is_numeric($_POST["qtyC"]) && (intval($_POST["qtyC"]) == floatval($_POST["qtyC"])))
{
//we have a whole number
}
else
$error["qtyC"] = "Please enter a whole number for Class C Widgets.";
}
//we should have at least 1 item ordered in the form
if(empty($_POST["qtyA"]) && empty($_POST["qtyB"]) && empty($_POST["qtyC"]))
$error["no_qty"] = "Please enter at least 1 item to order.";
if(is_array($error))
{
echo "An error occurred while processing your order.";
echo "<br>\n";
echo "Please check the following error messages carefully, then click back in your browser.";
echo "<br>\n";
while(list($key, $val) = each($error))
{
echo $val;
echo "<br>\n";
}
//stop everything as we have errors and should not continue
exit();
}
//we do not need the rest of the form fields as we can just calculate them from the whole numbers
if(!empty($_POST["qtyA"]))
{
$qtyA = $_POST["qtyA"];
$totalA = $qtyA * 1.25;
}
else
{
$qtyA = 0;
$totalA = 0;
}
if(!empty($_POST["qtyB"]))
{
$qtyB = $_POST["qtyB"];
$totalB = $qtyB * 2.35;
}
else
{
$qtyB = 0;
$totalB = 0;
}
if(!empty($_POST["qtyC"]))
{
$qtyC = $_POST["qtyC"];
$totalC = $qtyC * 3.45;
}
else
{
$qtyC = 0;
$totalC = 0;
}
$GrandTotal = $totalA + $totalB + $totalC;
//we have our data, and now build up an email message to send
$mailto = "[email protected]";
$subject = " Online Order";
$body = "The following confirms the details of your order:\n";
$body .= "\n\n";
$body .= "Name: " . $Name . "\n";
$body .= "Email: " . $Email . "\n";
$body .= "Other Contact Info: " . $OtherInfo . "\n";
$body .= "\n\n";
$body .= "Class A Widgets: (" . $qtyA . " * 1.25) = " . $totalA . "\n";
$body .= "Class B Widgets: (" . $qtyB . " * 2.35) = " . $totalB . "\n";
$body .= "Class C Widgets: (" . $qtyC . " * 3.45) = " . $totalC . "\n";
$body .= "\n";
$body .= "TOTALS: " . $GrandTotal . "\n";
mail($mailto, $subject, $body);
mail($Email, $subject, $body);
//we should state the order was sent
echo "The following information was sent.";
echo "<br>\n";
echo "<pre>\n";
echo $body;
echo "</pre>\n";
}
?>
答
你已经说过，你可能会在你的头上，所以我会尽力和给你一些方向在这里...
不要误会我的意思，我们都在这里帮助，但是有一些问题与你提供和询问：
您还没有确定一个问题。它不起作用的原因是因为有很多错误。任何人都可以给你的唯一答案是基本上重新写所有。
*的想法是提出问题的具体问题，像'所有这些都不起作用'的问题是不是真的可以回答。
我可以给你一些指向一些错误的指针，如果你可以相应地改变代码，我肯定有人（包括我自己）能够提供帮助。但如果你不明白需要什么，那么其他一些帮助可能会更好。
所以，在这里去了几点意见：
重复相同的代码来照此计算为每一个需要它的项目。
代码重用在这种情况下是巨大的。你已经在同一个函数中重复了同样的计算3个项目，但是你提到最终有66个项目。你真的想要再次写这些检查，验证等63次吗？
创建一个计算，格式化或验证作为参数传入的数据的函数。不要重复该代码。这使得代码更短，更易于阅读，更易于调试和更改。
错字？ document.ofrm。你的意思是document.form？
无论如何，这不是你应该如何访问DOM。更好的是：函数中的document.getElementById（elementId）。
你正在重新声明你的变量在相同的功能;声明一次后，您只需设置其当前值。
您正在向HTML中的函数传递错误，无效或不存在的项目。
将'document.ofrm'从输入传递给validNum函数;只需发送'this'（validNum（this））。然后，您可以获取触发onchange事件的单个输入的值。
当我意识到这是一个相当重新设计和重新编码的时候，我得到了这里。希望这可以帮助...
我很欣赏你的坦率。我正在尝试在线学习教程，以帮助教我如何创建一个表单，以创建可以通过电子邮件发送给所有者的订单。我会重新开始。谢谢。 –
没问题，我们都是每天都在学习。当你需要更具体的帮助时，我们仍然在这里。 –