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js判断字符问题

js判断字符问题  
痴痴呆呆
 Re: js判断字符问题  
Weber
 Re: js判断字符问题  
aGAric
 Re: js判断字符问题  
goodspeed
 Re: js判断字符问题  
金箭
 Re: js判断字符问题  
痴痴呆呆
From:痴痴呆呆
Subject:js判断字符问题
Date:Thu, 9 Dec 2004 11:41:04 +0800


怎么判断为空?
if(form1.user['username'].value=="")
{
alert('请输入密码');
return false;
}
不行呀
From:Weber
Subject:Re: js判断字符问题
Date:Fri, 10 Dec 2004 09:12:42 +0800
name和id不要用[]



"痴痴呆呆" 写入邮件
news:eFMjQ0a3EHA.1404@TK2MSFTNGP11.phx.gbl...
>
>
> 怎么判断为空?
> if(form1.user['username'].value=="")
> {
> alert('请输入密码');
> return false;
> }
> 不行呀
>
>
From:aGAric
Subject:Re: js判断字符问题
Date:Tue, 14 Dec 2004 02:21:47 +0800
需要对value的值进行转化格式
From:goodspeed
Subject:Re: js判断字符问题
Date:Mon, 13 Dec 2004 15:06:07 +0800
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cmV0dXJuIGZhbHNlOw0KPiB9DQo+srvQ0NG9DQo+DQoNCg==
From:金箭
Subject:Re: js判断字符问题
Date:Thu, 9 Dec 2004 13:13:33 +0800

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

试试这个?

if(!form1.user['username'].value)

"痴痴呆呆" 写入消息新闻:eFMjQ0a3EHA.1404@TK2MSFTNGP11.phx.gbl...
>
>
> 怎么判断为空?
> if(form1.user['username'].value=="")
-----BEGIN PGP SIGNATURE-----
Version: PGP 8.1

iQA/AwUBQbfe+6gjAuuXX8UoEQKlagCfTrF/mb2CidEDD7JrxHYuGFyKBesAoMWE
o46n5c4CmtBCt5654quUVrYd
=lR36
-----END PGP SIGNATURE-----
From:痴痴呆呆
Subject:Re: js判断字符问题
Date:Thu, 9 Dec 2004 13:36:40 +0800
不行,还是要报错:(
"金箭" 写入邮件
news:ORgZW3a3EHA.3380@TK2MSFTNGP09.phx.gbl...
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> 试试这个?
>
> if(!form1.user['username'].value)
>
> "痴痴呆呆" 写入消息新闻
:eFMjQ0a3EHA.1404@TK2MSFTNGP11.phx.gbl...
> >
> >
> > 怎么判断为空?
> > if(form1.user['username'].value=="")
> -----BEGIN PGP SIGNATURE-----
> Version: PGP 8.1
>
> iQA/AwUBQbfe+6gjAuuXX8UoEQKlagCfTrF/mb2CidEDD7JrxHYuGFyKBesAoMWE
> o46n5c4CmtBCt5654quUVrYd
> =lR36
> -----END PGP SIGNATURE-----
>
>
   

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