Check box and text box disable

[Jim]

I have a text box and a check box, by default the page should load and
the text box be disabled..I want it so that when you click the check
box the text box diabled = false...but, when you uncheck the check box
I want the disabled to = true again..heres what I have so far

<input type="checkbox" name="chxreques t"
onclick="javasc ript:enableFiel d()" value="ON" style="float: "left" >
<script language="javas cript">

function enableField()
{
if (chxrequest.che cked)= true
{
document.frmcal lreport.txtrequ est.disabled= false;
}
if (chxrequest.che cked)= false
{
document.frmcal lreport.txtrequ est.disabled= true;

}

} </script>

<input type = "text" id="txtrequest " name="txtreques t" size="20"
disabled></td>

[Lee]

Re: Check box and text box disable

Jim said:[color=blue]
>
>I have a text box and a check box, by default the page should load and
>the text box be disabled..I want it so that when you click the check
>box the text box diabled = false...but, when you uncheck the check box
>I want the disabled to = true again[/color]

You want the disabled attribute of txtrequest to have the
opposite boolean value of the checked attribute of chxrequest:

<input type="checkbox"
name="chxreques t"
onclick="this.f orm.txtrequest. disabled=!this. checked"
value="ON"
style="float:le ft">

<input type="text"
id="txtrequest "
name="txtreques t"
size="20"
disabled>

[Dr John Stockton]

Re: Check box and text box disable

JRS: In article <729757f9.04060 31227.10a67aff@ posting.google. com>, seen
in news:comp.lang. javascript, Jim <jim.ferris@mot orola.com> posted at
Thu, 3 Jun 2004 13:27:04 :
[color=blue]
>function enableField()
>{
>if (chxrequest.che cked)= true
>{
>document.frmca llreport.txtreq uest.disabled= false;
>}
> if (chxrequest.che cked)= false
> {
> document.frmcal lreport.txtrequ est.disabled= true;
>
> }
>
> }[/color]


(a) In javascript, = is assignment, not comparison
(b) It is almost never desirable to compare with true or false
(c) For the body of the function, this is simpler :
document.frmcal lreport.txtrequ est.disabled = ! chxrequest.chec ked
(d) The function would be more general / more expressive with chxrequest
as a parameter
(e) ISTM that you need a better instructor, or a more competently-
written book; for the latter, see the newsgroup FAQ.

--
© John Stockton, Surrey, UK. ?@merlyn.demon. co.uk Turnpike v4.00 IE 4 ©
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[Randy Webb]

Re: Check box and text box disable

Dr John Stockton wrote:
[color=blue]
> JRS: In article <729757f9.04060 31227.10a67aff@ posting.google. com>, seen
> in news:comp.lang. javascript, Jim <jim.ferris@mot orola.com> posted at
> Thu, 3 Jun 2004 13:27:04 :
>
>[color=green]
>>function enableField()
>>{
>>if (chxrequest.che cked)= true
>>{
>>document.frmc allreport.txtre quest.disabled= false;
>>}
>>if (chxrequest.che cked)= false
>>{
>>document.frmc allreport.txtre quest.disabled= true;
>>
>>}
>>
>> }[/color]
>
>
>
> (a) In javascript, = is assignment, not comparison[/color]

That depends, directly on the browser and how the script tag is
constructed. In Netscape 4.xx with language="javas cript1.2", then the =
does indeed do a comparison.
[color=blue]
> (b) It is almost never desirable to compare with true or false
> (c) For the body of the function, this is simpler :
> document.frmcal lreport.txtrequ est.disabled = ! chxrequest.chec ked[/color]

But this is better:

document.frmcal lreport.txtrequ est.disabled =
!document.frmca llreport.chxreq uest.checked

the chxrequest.chec ked shortcut is an IE-ism.[color=blue]
> (d) The function would be more general / more expressive with chxrequest
> as a parameter
> (e) ISTM that you need a better instructor, or a more competently-
> written book; for the latter, see the newsgroup FAQ.[/color]

No comment.



--
Randy
Chance Favors The Prepared Mind
comp.lang.javas cript FAQ - http://jibbering.com/faq/