I need to disable checkbox when top dropdown box selected as kernel

**Atli** · Feb 4 '10, 07:57 PM

Hey.

You would need to either use JavaScript (the easy way) or some sort of server-side scripting (the hard way).

Using JavaScript, you could add something like this to your <head> section:
[code=javascript]<script type="text/javascript">
function sel_facility_ch ange(newValue) {
// Make sure the new value is text.
if(typeof newValue == "string") {
// Fetch the checkbox. You need to
// fill in the actual ID of the checkbox you
// want to use.
var checkbox = document.getEle mentById('id-of-the-checkbox');

// Disable / enable the checkbox based on the
// new value. (Note, any value for "disabled"
// will disable it, even TRUE or 'enabled'.)
if(newValue == 'Kernel') {
checkbox.setAtt ribute('disable d', true);
}
else {
checkbox.remove Attribute('disa bled');
}
}
}
</script>[/code]

And link that to the change even of your <select> by setting the onchange attribute in the HTML.
[code=html]<select ... onchange="sel_f acility_change( this.value);">[/code]

Now, when you change the selection of the drop-down, the change event fires and the JavaScript function is executed.

P.S.
What is the $| ... |$ syntax in your HTML?

**tvnaidu** · Feb 9 '10, 06:59 PM

Sorry for late, I apologize. Actually here lua script embedded in html.

I need to disable checkbox when top dropdown box selected as kernel

I need to disable checkbox when top dropdown box selected as kernel

Comment

Comment