Unchecking dynamically checked checkboxes. 1

[travisbrown]

Once more with feeling.

I'm trying to get all ckeckboxes within a div (regardless of child nodes) to check/uncheck based on the state of a master checkbox. Dan's post at

http://www.tek-tips.com/viewthread.cfm?qid=1102195

is where I'm heading, but haveing a few implementation problems. I'm not sure how to get them unchecked. Can anyone help?

function CheckAll(theElement)
{
var cbs = document.getElementById(theElement).getElementsByTagName('input');
for (var loop=0; loop<cbs.length; loop++)
   if (cbs[loop].type == 'checkbox') cbs[loop].checked = true;
}

<input name="checkall" id="checkall" type="checkbox" value="" onclick="CheckAll('recipientsList');" />

 

[travisbrown]

I was thinking something like this but I usually cause more problems for myself than good. Am I on the right track?

<input name="checkall" id="checkall" type="checkbox" value="" onclick="CheckAll('recipientsList',this);" />

function CheckAll(theElement,control)
{
var cbs = document.getElementById(theElement).getElementsByTagName('input');

if (GetElementById(control).checked = false) {
for (var loop=0; loop<cbs.length; loop++)
   if (cbs[loop].type == 'checkbox') cbs[loop].checked = true; }
else
{
for (var loop=0; loop<cbs.length; loop++)
   if (cbs[loop].type == 'checkbox') cbs[loop].checked = false; }
}

 

[cLFlaVA]

slight mod:

function CheckAll(theElement,control) {
    var cbs = document.getElementById(theElement).getElementsByTagName('input');

    for (var loop=0; loop<cbs.length; loop++)
        if (cbs[loop].type == 'checkbox') cbs[loop].checked = control.checked;
}

*cLFlaVA
----------------------------
[tt]( <P> <B>)¹³ * (<P> <.</B>)[/tt]

[URL unfurl="true"]http://www.coryarthus.com/[/url]

 

[travisbrown]

It looks good and much slicker than my else attempt, but not checking the checkboxes now. It will uncheck any boxes onclick.

 

[cLFlaVA]

impossible. show your actual code.



*cLFlaVA
----------------------------
[tt]( <P> <B>)¹³ * (<P> <.</B>)[/tt]

[URL unfurl="true"]http://www.coryarthus.com/[/url]

 

[travisbrown]

You are right. Impossible. When monkeying around before you replied I'd changed this:

CheckAll('recipientsList',this);
to this
CheckAll('recipientsList','checkall');

Changed it back and all is well.

Star for you.

Thanks.

 

[cLFlaVA]

thanks



*cLFlaVA
----------------------------
[tt]( <P> <B>)¹³ * (<P> <.</B>)[/tt]

[URL unfurl="true"]http://www.coryarthus.com/[/url]