JSP提交不能判断输入是否为空?请教各位大虾!!!!
以下是代码<%@pagecontentType="text/html;charset=gb2312"%><html><head><title>EbuyerWMSV1.0<...
以下是代码
<%@ page contentType="text/html; charset=gb2312" %>
<html>
<head>
<title>Ebuyer WMS V1.0</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script language="javascript">
function Check_Input()
{
var a = document.getElementById('descriptiona').value;
var b = document.getElementById('descriptionb').value;
var c = document.getElementById('descriptionc').value;
var d = document.getElementById('descriptiond').value;
var e = document.getElementById('descriptione').value;
if(a=="")
{
alert("namea, Please!");
document.getElementById('descriptiona').focus();
return(false);
}
if(b=="")
{
alert("name2, Please!");
document.getElementById('descriptionb').focus();
return(false);
}
if(c=="")
{
alert("name3, Please!");
document.getElementById('descriptionc').focus();
return(false);
}
if(d=="")
{
alert("name4, Please!");
document.getElementById('descriptiond').focus();
return(false);
}
if(e=="")
{
alert("name5, Please!");
document.getElementById('descriptione').focus();
return(false);
}
if (a==b || a==c || a==d || a==e || b==c || b==d || b==e || c==d || c=e || d=e)
{
alert("存在相同的名称!请重新输入!");
document.getElementById('descriptiona').focus();
return(false);
}
return(true);
}
window.onload=function()
{
document.getElementById('descriptiona').focus();
}
</script>
</head>
<body>
<table border=1 bordercolor="#000000" width="60%" align="center">
<form id="form1" name="form1" method="post" action="in_message.jsp" onSubmit="return Check_Input()">
<tr bgcolor="#DFDFFF">
<td height="40" colspan="2" style="font-size:150%"><div align="center">欢迎使用仓库订单子系统</div></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第一种产品名称(如A1): </td>
<td><input name="descriptiona" id="descriptiona" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第二种产品名称(如B1): </td>
<td><input name="descriptionb" id="descriptionb" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第三种产品名称(如C1): </td>
<td><input name="descriptionc" id="descriptionc" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第四种产品名称(如D1): </td>
<td><input name="descriptiond" id="descriptiond" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第五种产品名称(如E1): </td>
<td><input name="descriptione" id="descriptione" maxlength="32"></td>
</tr>
<tr bgcolor="#EFDFFF">
<td height="21" colspan="2"><div align="center"><input type="submit" id="Submit" name="Submit" value="提交"></div></td>
</tr>
<tr bgcolor="#DFDFFF">
<td height="21" colspan="3"><div align="center"><a href="index.jsp">返回首页</a></td>
</tr>
</form>
</table>
</body>
</html> 展开
<%@ page contentType="text/html; charset=gb2312" %>
<html>
<head>
<title>Ebuyer WMS V1.0</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script language="javascript">
function Check_Input()
{
var a = document.getElementById('descriptiona').value;
var b = document.getElementById('descriptionb').value;
var c = document.getElementById('descriptionc').value;
var d = document.getElementById('descriptiond').value;
var e = document.getElementById('descriptione').value;
if(a=="")
{
alert("namea, Please!");
document.getElementById('descriptiona').focus();
return(false);
}
if(b=="")
{
alert("name2, Please!");
document.getElementById('descriptionb').focus();
return(false);
}
if(c=="")
{
alert("name3, Please!");
document.getElementById('descriptionc').focus();
return(false);
}
if(d=="")
{
alert("name4, Please!");
document.getElementById('descriptiond').focus();
return(false);
}
if(e=="")
{
alert("name5, Please!");
document.getElementById('descriptione').focus();
return(false);
}
if (a==b || a==c || a==d || a==e || b==c || b==d || b==e || c==d || c=e || d=e)
{
alert("存在相同的名称!请重新输入!");
document.getElementById('descriptiona').focus();
return(false);
}
return(true);
}
window.onload=function()
{
document.getElementById('descriptiona').focus();
}
</script>
</head>
<body>
<table border=1 bordercolor="#000000" width="60%" align="center">
<form id="form1" name="form1" method="post" action="in_message.jsp" onSubmit="return Check_Input()">
<tr bgcolor="#DFDFFF">
<td height="40" colspan="2" style="font-size:150%"><div align="center">欢迎使用仓库订单子系统</div></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第一种产品名称(如A1): </td>
<td><input name="descriptiona" id="descriptiona" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第二种产品名称(如B1): </td>
<td><input name="descriptionb" id="descriptionb" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第三种产品名称(如C1): </td>
<td><input name="descriptionc" id="descriptionc" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第四种产品名称(如D1): </td>
<td><input name="descriptiond" id="descriptiond" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第五种产品名称(如E1): </td>
<td><input name="descriptione" id="descriptione" maxlength="32"></td>
</tr>
<tr bgcolor="#EFDFFF">
<td height="21" colspan="2"><div align="center"><input type="submit" id="Submit" name="Submit" value="提交"></div></td>
</tr>
<tr bgcolor="#DFDFFF">
<td height="21" colspan="3"><div align="center"><a href="index.jsp">返回首页</a></td>
</tr>
</form>
</table>
</body>
</html> 展开
4个回答
展开全部
稍微修改了一下啊
<%@ page contentType="text/html; charset=gb2312" %>
<html>
<head>
<title>Ebuyer WMS V1.0</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script language="javascript">
function Check_Input()
{
var a = document.getElementById('descriptiona').value;
var b = document.getElementById('descriptionb').value;
var c = document.getElementById('descriptionc').value;
var d = document.getElementById('descriptiond').value;
var e = document.getElementById('descriptione').value;
if(a==""||b==""||c==""||d==""||e=="")
{
alert("name, Please!");
}else {
document.form1.submit();
}
}
window.onload=function()
{
document.getElementById('descriptiona').focus();
}
</script>
</head>
<body>
<table border=1 bordercolor="#000000" width="60%" align="center">
<form id="form1" name="form1" method="post" action="in_message.jsp" >
<tr bgcolor="#DFDFFF">
<td height="40" colspan="2" style="font-size:150%"><div align="center">欢迎使用仓库订单子系统</div></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第一种产品名称(如A1): </td>
<td><input name="descriptiona" id="descriptiona" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第二种产品名称(如B1): </td>
<td><input name="descriptionb" id="descriptionb" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第三种产品名称(如C1): </td>
<td><input name="descriptionc" id="descriptionc" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第四种产品名称(如D1): </td>
<td><input name="descriptiond" id="descriptiond" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第五种产品名称(如E1): </td>
<td><input name="descriptione" id="descriptione" maxlength="32"></td>
</tr>
<tr bgcolor="#EFDFFF">
<td height="21" colspan="2"><div align="center"><input type="button" id="Submit" name="Submit" value="提交" onclick="Check_Input()"></div></td>
</tr>
<tr bgcolor="#DFDFFF">
<td height="21" colspan="3"><div align="center"><a href="index.jsp">返回首页</a></td>
</tr>
</form>
</table>
</body>
</html>
<%@ page contentType="text/html; charset=gb2312" %>
<html>
<head>
<title>Ebuyer WMS V1.0</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script language="javascript">
function Check_Input()
{
var a = document.getElementById('descriptiona').value;
var b = document.getElementById('descriptionb').value;
var c = document.getElementById('descriptionc').value;
var d = document.getElementById('descriptiond').value;
var e = document.getElementById('descriptione').value;
if(a==""||b==""||c==""||d==""||e=="")
{
alert("name, Please!");
}else {
document.form1.submit();
}
}
window.onload=function()
{
document.getElementById('descriptiona').focus();
}
</script>
</head>
<body>
<table border=1 bordercolor="#000000" width="60%" align="center">
<form id="form1" name="form1" method="post" action="in_message.jsp" >
<tr bgcolor="#DFDFFF">
<td height="40" colspan="2" style="font-size:150%"><div align="center">欢迎使用仓库订单子系统</div></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第一种产品名称(如A1): </td>
<td><input name="descriptiona" id="descriptiona" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第二种产品名称(如B1): </td>
<td><input name="descriptionb" id="descriptionb" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第三种产品名称(如C1): </td>
<td><input name="descriptionc" id="descriptionc" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第四种产品名称(如D1): </td>
<td><input name="descriptiond" id="descriptiond" maxlength="32"></td>
</tr>
<tr bgcolor="#FFFFCA">
<td>请输入第五种产品名称(如E1): </td>
<td><input name="descriptione" id="descriptione" maxlength="32"></td>
</tr>
<tr bgcolor="#EFDFFF">
<td height="21" colspan="2"><div align="center"><input type="button" id="Submit" name="Submit" value="提交" onclick="Check_Input()"></div></td>
</tr>
<tr bgcolor="#DFDFFF">
<td height="21" colspan="3"><div align="center"><a href="index.jsp">返回首页</a></td>
</tr>
</form>
</table>
</body>
</html>
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展开全部
经过火狐的firebug工具调试后, 你的错误发生在这个地方
if (a==b || a==c || a==d || a==e || b==c || b==d || b==e || c==d || c=e || d=e)
{
alert("存在相同的名称!请重新输入!");
document.getElementById('descriptiona').focus();
return(false);
}
,
你将这段代码注释掉,看看, 结果就可以提交了, 如果你要完成这个的验证,在修改下这个判断条件.
if (a==b || a==c || a==d || a==e || b==c || b==d || b==e || c==d || c=e || d=e)
{
alert("存在相同的名称!请重新输入!");
document.getElementById('descriptiona').focus();
return(false);
}
,
你将这段代码注释掉,看看, 结果就可以提交了, 如果你要完成这个的验证,在修改下这个判断条件.
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楼猪脚本没有错,只是所有input标签里缺少 type='text' 加上就行了
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if (a==b || a==c || a==d || a==e || b==c || b==d || b==e || c==d || c==e || d==e)这一行最后你写成=号了,脚本错了
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