📄 additem.jsp
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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>addItem.jsp</title>
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<script>
//这个功能用来输入货物的详细信息，并算出折扣后货物的价格，往数据库里面加一条信息
function check(){
//货物数量名称单价不能为空
if(document.f1.name.value==""){
alert("请输入货物名称");
}else if(document.f1.num.value==""){
alert("请输入货物数量");
}else if(document.f1.price.value==""){
alert("请输入货物单价");
}
//算出折扣号
if(document.f1.select.value=="0")
document.f1.sumprice.value=parseInt(document.f1.num.value)*parseFloat(document.f1.price.value);
else if(document.f1.select.value=="1"){
document.f1.discount.disabled = false;
if(document.f1.discount.value==""){
alert("请输入折扣率");
}else if(document.f1.discount.value >1 ||document.f1.discount.value<=0){
alert("请输入0-1之间的折扣率");
}
{
document.f1.sumprice.value=parseInt(document.f1.num.value)*parseFloat(document.f1.price.value)*parseFloat(document.f1.discount.value);
}
}else{
document.f1.number.disabled = false;
document.f1.promoteprice.disabled = false;
if(document.f1.number.value=="")
alert("请输入促销数量");
else if(parseInt(document.f1.number.value)>parseInt(document.f1.num.value))
alert("促销数量大于总数目了！");
else if(document.f1.promoteprice.value=="")
alert("请输入促销价格");
else{
document.f1.sumprice.value=(parseInt(document.f1.num.value)-parseInt(document.f1.number.value))*parseFloat(document.f1.price.value)+parseInt(document.f1.number.value)*parseFloat(document.f1.promoteprice.value)
}
}
if(isNaN(document.f1.sumprice.value)){
alert("请输入整数！");
}
}
</script>
<body vlink="red">
<form name="f1" method="post" action="/Order/servlet/AddItem">
<a href="/Order/servlet/SearchAll">返回订单列表<a>-><a href="/Order/servlet/ViewOrder">返回订单详情页面<a>->添加订单明细：<br>
<table border="1">
<tr>
<td colspan="2" align="center">
当前订单号
<%=request.getParameter("orderId")%>
<input type="hidden" name="orderId"
value=<%=request.getParameter("orderId")%>>
</td>
</tr>
<tr>
<td align="center">
货物名称
<input type="text" name="name">
</td>
<td align="center">
折扣类型
<select name="select" onBlur=check()>
<option value="0">
无折扣
<option value="1">
有折扣
<option value="2">
有促销
</select>
</td>
</tr>
<tr>
<td align="center">
货物数量
<input type="text" name="num" onBlur=check()>
</td>
<td align="center">
货物单价
<input type="text" name="price" onBlur=check()>
</td>
</tr>
<tr>
<td align="center">
货物总价
<input type="text" name="sumprice">
</td>
<td align="center">
折扣率
<input type="text" name="discount" onBlur=check()>
</td>
</tr>
<tr>
<td align="center">
促销数量
<input type="text" name="number" onBlur=check()>
</td>
<td align="center">
促销单价
<input type="text" name="promoteprice" onBlur=check()>
</td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" name="sub" value="确认">
</td>
<td valign="top">
<br>
</td>
</tr>
</table>
</form>
</body>
<script>
//初始化货物数量和价格为零
document.f1.num.value=0;
document.f1.price.value=0;
document.f1.sumprice.disabled = "disabled";
document.f1.discount.disabled = true;
document.f1.number.disabled = true;
document.f1.promoteprice.disabled = true;
</script>
</html>
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