Automatically uncheck check/uncheck button on unchecking one selection

[kid]

Hi,
I have 5 checkbox elements,
i.e:

( 1 ) a
( 2 ) b
( 3 ) c
( 4 ) d
( Check/Uncheck all )

i want to check all the selections if the check button is check and uncheck all the selections when the uncheck button is unchecked but here's the catch, if i uncheck the 1st selection or other selections the check/uncheck button will automatically uncheck too. can anyone help me please?

[gits]

hi ...

please post the code you already have, the check- and uncheck-controls are checkboxes too? ... please show the html too ...

kind regards

[kid]

heres my code:

[HTML]<form name="myform" action="myform.php" method="post">
<b>Your Favorites</b><br>
<input type="checkbox" name="list" value="1">Pie<br>
<input type="checkbox" name="list" value="2">Pizza<br>
<input type="checkbox" name="list" value="3">Candy<br>
<input type="checkbox" name="list" value="4">Soda<br>
<input type="checkbox" name="list" value="5">Antacids<br>

<input type="checkbox" name="listAllCheck" value="listAllCheck" onClick="checkAll(document.myform.list,this)"><str ong>Check / Uncheck All</strong><br>
</form>


<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
function checkAll(checkname, checksubmit) {
for (i = 0; i < checkname.length; i++)
checkname[i].checked = checksubmit.checked? true:false
}
// End -->
</script>[/HTML]

[gits]

hmmm ... ok ... but i don't get the problem. you check the check-all checkbox and all checkboxes will be checked, uncheck it ... unchecks all boxes ... and now? when checking/unchecking a box from the list - nothing happens, so what behaviour do you want to have?

kind regards

[acoder]

Changed the thread title.

Please use meaningful titles. Thank you.

[acoder]

Hi,
I have 5 checkbox elements,
i.e:

( 1 ) a
( 2 ) b
( 3 ) c
( 4 ) d
( Check/Uncheck all )

i want to check all the selections if the check button is check and uncheck all the selections when the uncheck button is unchecked but here's the catch, if i uncheck the 1st selection or other selections the check/uncheck button will automatically uncheck too. can anyone help me please?

I think this link will help.