option.selected can't be changed

#1

I encoutered a problem which almost drove me crazy, but let me skip my
personal problem, and show you this really strange problem.
msdn.microsoft.com told me that selected is a boolean attribute
with "false" as its default value.However, unfortunately, I found that
not only "selected" was "true" when I assigned "false" to it, but also
remained "true" all the time even when I tried to change it to "false".
here go the codes:
<body>
<form >
<select >
<option id="op" value="initialValue" selected="false">op</option>
<select>
</form>

<script>
function fun(){
op.value="modifiedValue";
var bool=(1==2);
op.selected=bool;
alert("op.selected is "+op.selected + " op.value is "+op.value);
}
fun();
</script>
</body>

I have tried to find some explanation by google but without any
result, I appriciate it if you tell me why or where i am wrong.
thank you!

#2

Gazing into my crystal ball I observed "M.C" <MaXiaochi (AT) gmail (DOT) com> writing
in news:1121510598.031857.194210 (AT) o13g2000cwo (DOT) googlegroups.com:

Quote:

I encoutered a problem which almost drove me crazy, but let me skip my
personal problem, and show you this really strange problem.
msdn.microsoft.com told me that selected is a boolean attribute
with "false" as its default value.However, unfortunately, I found that
not only "selected" was "true" when I assigned "false" to it, but also
remained "true" all the time even when I tried to change it to "false".
here go the codes:
body
form
select
option id="op" value="initialValue" selected="false">op</option
select> </form

Here's your problem
<option id="op" value="initialValue" selected>op</option>

If you are using XHTML where all attributes must have values, then you
would use selected="selected".

For checkboxes, it's checked, or checked="checked".

Quote:

script
function fun(){
op.value="modifiedValue";
var bool=(1==2);
op.selected=bool;
alert("op.selected is "+op.selected + " op.value is "+op.value);
}
fun();
/script
/body

Now try running your script.

--
Adrienne Boswell
http://www.cavalcade-of-coding.info
Please respond to the group so others can share

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option.selected can't be changed

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option.selected can't be changed - 07-16-2005 , 06:43 AM

Re: option.selected can't be changed - 07-16-2005 , 05:31 PM