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更新时间：2023-12-04 18:03:10
）< ; / th >
< th > 数量< ; / th >
< th > < / th >
< th > < / th >
< c：foreach var = product items =
{inventoryBean.getProductList（）} xmlns：c = ＃unknown >
< 表格 操作 = 库存 方法 = POST >
< tr >
< td > < input type = text name = upc value =
{product.getUpc（）} size = 10 / > < / td >
< td > < input type = text name = longDetails value =
I have created a jsp page that I need help validating. There are 5 textboxes on the page. 2 are text(longDetails, shortDetails) and 3 are integers(UPC,Price,Quantity). They all need to be validated to make sure the form isn't submitted with invalid data.
I have the page code here along with my script please let me know what I'm doing wrong.
<%@page import="java.util.List"%>
<%@page import="jonej102.Product"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Inventory</title>
</head>
</script>
<body>
<h1>View Inventory</h1>
<jsp:usebean id="inventoryBean" class="jonej102.InventoryManager" xmlns:jsp="#unknown"></jsp:usebean>
<table border="1" cellspacing="10">
<th>UPC</th>
<th>Long Details</th>
<th>Short Details</th>
<th>Price ($)</th>
<th>Quantity</th>
<th></th>
<th></th>
<c:foreach var="product" items="${inventoryBean.getProductList()}" xmlns:c="#unknown">
<form action="inventory" method="POST">
<tr>
<td><input type="text" name="upc" value="${product.getUpc()}" size="10" /></td>
<td><input type="text" name="longDetails" value="${product.getLongDetails()}" size="50" /></td>
<td><input type="text" name="shortDetails" value="${product.getShortDetails()}" size="20" /></td>
<td><input type="text" name="price" value="${product.getPrice()}" /></td>
<td><input type="text" name="stock" value="${product.getStock()}" size="4" /></td>
<td><input type="submit" name="button" value="Update" /></td>
<td><input type="submit" name="button" value="Delete" /></td>
</tr>
</form>
</c:foreach>
</table>
<br />
<h1>Manage Inventory</h1>
<form method="POST" action="inventory">
UPC: <input type="text" name="upc" size="10" />
<br /><br />
Long Details: <input type="text" name="longDetails" size="50" />
<br /><br />
Short Details: <input type="text" name="shortDetails" size="20" />
<br /><br />
Price: $<input type="text" name="price" />
<br /><br />
Stock: <input type="text" name="stock" size="4" />
<br /><br /><br />
<input type="submit" name="button" value="Create" />
</form>
</body>
</html>
function validateMyForm()
{
var valid = true;
var validationMessage = 'Please correct the following errors:\r\n';
if (document.getElementById('upc').value.length == 0)
{
validationMessage = validationMessage + ' - UPC is missing\r\n';
valid = false;
}
if (document.getElementById('longDetails').value.length == 0)
{
validationMessage = validationMessage + ' - Long Details are missing\r\n';
valid = false;
}
if (document.getElementById('shortDetails').value.length != 10)
{
validationMessage = validationMessage + ' - Short Details are missing.\r\n';
valid = false;
}
if (document.getElementById('price').value.length == 0)
{
validationMessage = validationMessage + ' - Price is missing\r\n';
valid = false;
}
if (document.getElementById('stock').value.length == 0)
{
validationMessage = validationMessage + ' - Stock is missing\r\n';
valid = false;
}
if (valid == false)
{
alert(validationMessage);
}
return valid;
}
</script>
[edit]Code block added - OriginalGriff[/edit]
What I have tried:
[edit]Left blank by OP - This added to let it post...[/edit]
)</th> <th>Quantity</th> <th></th> <th></th> <c:foreach var="product" items="
{inventoryBean.getProductList()}" xmlns:c="#unknown"> <form action="inventory" method="POST"> <tr> <td><input type="text" name="upc" value="
{product.getUpc()}" size="10" /></td> <td><input type="text" name="longDetails" value="