如何选择显示无 [英] How can select shows none

问题描述

你好，

<％@ Language = VBScript％>

<％

Response.Write"< SELECT id = select1 name = select1>"

Response.Write"< OPTION value = 1> One< / OPTION>"

Response.Write"< ; OPTION值= 2>两个< / OPTION>"

Response.Write"< OPTION value = 3>三< / OPTION>"

响应。写< / SELECT>

％>

打开此页面时，select1显示One。我想在打开页面时选择1

显示无。也就是说，select1中没有显示任何内容。

谢谢

解决方案

<％

Response.Write"< SELECT id = select1 name = select1>"

Response.Write"< OPTION value = 1>一个< / OPTION>"

Response.Write"< OPTION value = 2>两个< / OPTION>"

Response.Write" ;< OPTION value = 3> ; 3< / OPTION>"

Response.Write"< / SELECT>"

％>

" Jack" ; < SI ***************** @ noyahoo.co.jp>在消息中写道

news：％2 **************** @ TK2MSFTNGP11.phx.gbl ...

你好，
<％@ Language = VBScript％>
<％
Response.Write"< SELECT id = select1 name = select1>"
Response.Write" ;< OPTION value = 1>一个< / OPTION>"
Response.Write"< OPTION value = 2>两个< / OPTION>"
Response.Write"< OPTION value = 3>三< / OPTION>"
Response.Write"< / SELECT>"
％>
打开此页面时，select1显示One。我想在打开页面时，选择1
显示无。也就是说，select1中没有显示任何内容。
谢谢

对不起意思是说


Response.Write"< SELECT id = select1 name = select1>"

Response.Write"< OPTION值= QUOT;""" SELECTED>< / OPTION>"

Response.Write"< OPTION value = 1> One< / OPTION>"

Response.Write"< ; OPTION值= 2>两个< / OPTION>"

Response.Write"< OPTION value = 3>三< / OPTION>"

响应。写下< / SELECT>


" Alex Goodey" < AG ***** @ hsfinancial.co.uk>在消息中写道

news：bv ************ @ ID-221525.news.uni-berlin.de ...

< ;％
Response.Write"< SELECT id = select1 name = select1>"
Response.Write"< OPTION value = 1> One< / OPTION>"
Response.Write"< OPTION value = 2> Two< / OPTION>"
Response.Write"< OPTION value = 3> Three< / OPTION>"
Response.Write" ;< / SELECT>"
％>

" Jack" < SI ***************** @ noyahoo.co.jp>在消息中写道
新闻：％2 **************** @ TK2MSFTNGP11.phx.gbl ...

你好，
<％@ Language = VBScript％>
<％
Response.Write"< SELECT id = select1 name = select1>"
Response.Write"< OPTION value = 1>一个< / OPTION>"
Response.Write"< OPTION value = 2>两个< / OPTION>"
Response.Write"< OPTION value = 3>三< / OPTION>"
Response.Write"< / SELECT>"
％>
打开此页面时，select1显示One。我希望在打开时
页面，select1显示无。也就是说，select1中没有显示任何内容。
谢谢

当你处理他们的回复时要小心

选择一个实际值，而不是空白的。


如果你在< head>< / head>
中包含以下javascript函数
部分，并从表单中调用它，如图所示，Javascript将在允许表单提交之前检查

选择。请注意，如果Javascript被禁用了
，这不会起作用，所以你还必须检查服务器端。


javascript ：

函数CheckForm（objForm）{

if（objForm.select1.selectedIndex == 0）{

alert（" You）必须从选择框中选择一个选项。）;

返回false;}

}


HTML：

< form onSubmit =" return CheckForm（this）;">


希望这会有所帮助 - 请注意它在午夜过后，我是累了，我写了

我的头顶上的脚本并没有检查过 - 它应该*工作

但我不承担任何责任...


Blair

Alex Goodey< ag ***** @ hsfinancial.co.uk>在文章中写道

< bv ************ @ ID-221525.news.uni-berlin.de> ...

对不起意思是说

Response.Write"< SELECT id = select1 name = select1>"
Response.Write"< OPTION value ="""" ; SELECTED>< / OPTION>"
Response.Write"< OPTION value = 1> One< / OPTION>"
Response.Write"< OPTION value = 2> Two< / OPTION>"
Response.Write"< OPTION value = 3> Three< / OPTION>"
Response.Write"< / SELECT>"

Hello,
<%@ Language=VBScript %>
<%
Response.Write "<SELECT id=select1 name=select1>"
Response.Write "<OPTION value=1>One</OPTION>"
Response.Write "<OPTION value=2>Two</OPTION>"
Response.Write "<OPTION value=3>Three</OPTION>"
Response.Write "</SELECT>"
%>
When open this page,select1 shows "One".I want when open the page,select1
shows none.That is to say,nothing is displayed in select1.
Thank you

解决方案

<%
Response.Write "<SELECT id=select1 name=select1>"
Response.Write "<OPTION value=1>One</OPTION>"
Response.Write "<OPTION value=2>Two</OPTION>"
Response.Write "<OPTION value=3>Three</OPTION>"
Response.Write "</SELECT>"
%>
"Jack" <si*****************@noyahoo.co.jp> wrote in message
news:%2****************@TK2MSFTNGP11.phx.gbl...

Hello,
<%@ Language=VBScript %>
<%
Response.Write "<SELECT id=select1 name=select1>"
Response.Write "<OPTION value=1>One</OPTION>"
Response.Write "<OPTION value=2>Two</OPTION>"
Response.Write "<OPTION value=3>Three</OPTION>"
Response.Write "</SELECT>"
%>
When open this page,select1 shows "One".I want when open the page,select1
shows none.That is to say,nothing is displayed in select1.
Thank you

Sorry meant to say

Response.Write "<SELECT id=select1 name=select1>"
Response.Write "<OPTION value="""" SELECTED></OPTION>"
Response.Write "<OPTION value=1>One</OPTION>"
Response.Write "<OPTION value=2>Two</OPTION>"
Response.Write "<OPTION value=3>Three</OPTION>"
Response.Write "</SELECT>"

"Alex Goodey" <ag*****@hsfinancial.co.uk> wrote in message
news:bv************@ID-221525.news.uni-berlin.de...

<%
Response.Write "<SELECT id=select1 name=select1>"
Response.Write "<OPTION value=1>One</OPTION>"
Response.Write "<OPTION value=2>Two</OPTION>"
Response.Write "<OPTION value=3>Three</OPTION>"
Response.Write "</SELECT>"
%>
"Jack" <si*****************@noyahoo.co.jp> wrote in message
news:%2****************@TK2MSFTNGP11.phx.gbl...

Hello,
<%@ Language=VBScript %>
<%
Response.Write "<SELECT id=select1 name=select1>"
Response.Write "<OPTION value=1>One</OPTION>"
Response.Write "<OPTION value=2>Two</OPTION>"
Response.Write "<OPTION value=3>Three</OPTION>"
Response.Write "</SELECT>"
%>
When open this page,select1 shows "One".I want when open the page,select1 shows none.That is to say,nothing is displayed in select1.
Thank you

Just be careful when you are proccessing the response that they have
selected an actual value, rather than the blank one.

If you include the following javascript function within the <head></head>
section, and call it from the form as shown, Javascript will check for a
selection before allowing the form to submit. Note that, if Javascript is
disabled, this won''t work, so you MUST also check server-side.

javascript:
function CheckForm(objForm){
if(objForm.select1.selectedIndex == 0){
alert("You must select an option from the select box.");
return false;}
}

HTML:
<form onSubmit="return CheckForm(this);">

Hope this helps - note that its after midnight here, I''m tired and I wrote
the script off the top of my head and haven''t checked it - it *should* work
but I take no responsibility...

Blair
Alex Goodey <ag*****@hsfinancial.co.uk> wrote in article
<bv************@ID-221525.news.uni-berlin.de>...

Sorry meant to say

Response.Write "<SELECT id=select1 name=select1>"
Response.Write "<OPTION value="""" SELECTED></OPTION>"
Response.Write "<OPTION value=1>One</OPTION>"
Response.Write "<OPTION value=2>Two</OPTION>"
Response.Write "<OPTION value=3>Three</OPTION>"
Response.Write "</SELECT>"

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