<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>207页阶段二</title>
</head>
<body>
<form name="formA" method="post" action="">
<table bgcolor="#999999" border="1">
<tr>
<td colspan="5"><center><b><font size="+2">简易购物车</font></b></center></td>
</tr>
<tr>
<td>商品名称</td>
<td>数量（件）</td>
<td>单价（美元）</td>
<td>运费（美元）</td>
<td><input name="btnCalc" type="button" value="合计" onclick="Calc()" /></td>
</tr>
<tr>
<td>跑跑道具</td>
<td><input name="txtNum" type="text" /></td>
<td><input name="txtPrice" type="text" /></td>
<td><input name="txtRdPrice" type="text" /></td>
<td><input name="AllResult" type="text" />美元</td>
</tr>
</table>
</form>
<script language="javascript">
function Calc(){
if(document.formA.txtNum.value == ""){
document.formA.txtNum.value = "数量不能为空";
return;
}
if(document.formA.txtPrice.value == ""){
document.formA.txtPrice.value = "单价不能为空";
return;
}
if(document.formA.txtRdPrice.value == ""){
document.formA.txtRdPrice.value = "运费不能为空";
return;
}
document.formA.AllResult.value = parseFloat(document.formA.txtNum.value) * parseFloat(document.formA.txtPrice.value) + parseFloat(document.formA.txtRdPrice.value);
}
</script>
</body>
</html>
