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Problem disabling drop downs.

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Mar 14.2008

Hello,
I am new to javascript and have what i think is a really simple problem. I have a few drop downs that I want to disable via javascript.

[code]
var x = $get(‘currentEventInputSelect’).value;
if (x == 4)
{
$get(name_dropDownListControl’).disabled=true;
$get(address_dropDownListControl’).disabled=true;
$get(age_dropDownListControl’).disabled=true;
}
[/code]

It will only work if I put this before the if:

[code]
alert(x);
[/code]

can anyone please explain to me why this happens. I am using VS 2005 C# and the above code is being called in the

[code]
function pageLoad(sender, args)
{
…
{
[/code]

Thanks

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JavaScript

3 Comments(s) ↴

Copy linkTweet thisAlerts:
@toicontienMar 14.2008 — You have some syntax errors:
var x = $get('currentEventInputSelect').value;
if (x == 4)
{
// Missing the opening single quotes
$get('name_dropDownListControl').disabled=true;
$get('address_dropDownListControl').disabled=true;
$get('age_dropDownListControl').disabled=true;
}
Copy linkTweet thisAlerts:
@smithsf22authorMar 14.2008 — Yeah sorry about that... in my code it does have the single quotes ?, but still have the problem
Copy linkTweet thisAlerts:
@toicontienMar 14.2008 — What is the $get function? Is it a wrapper for document.getElementById()?

Lastly, are 'currentEventInputSelect', 'name_dropDownListControl', 'address_dropDownListControl', 'age_dropDownListControl' all HTML tag Ids? And are they they only instances of those Ids on your whole page?

Does this code work?
var x = Number(document.getElementById('currentEventInputSelect').value);
if (x == 4)
{
document.getElementById('name_dropDownListControl').disabled = true;
document.getElementById('address_dropDownListControl').disabled = true;
document.getElementById('age_dropDownListControl').disabled = true;
}
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