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Check/Select All?

alrukus
10-27-2003, 07:38 PM
Hey is there a code I can use so that if i have a form with check boxes when i click like 'Check All' or something it will select every choice instead of the user having to select every option?
beetle
10-27-2003, 08:15 PM
Yes, there's several ways.

What would you prefer? A single checkbox that controls the checking/unchecking of all the others? Or a button that says "Check All", then when clicked says "Uncheck All".

Also, can I see the HTML of your form?
Willy Duitt
10-27-2003, 08:19 PM
Here's one way:

<script type="text/javascript">
<!-- Begin
function checkAll(field)
{
for (i = 0; i < field.length; i++)
field[i].checked = true ;
}

function uncheckAll(field)
{
for (i = 0; i < field.length; i++)
field[i].checked = false ;
}
// End -->
</script>
</HEAD.

<BODY>
<form name="myform">
<input type="checkbox" name="list" value="1">1<br>
<input type="checkbox" name="list" value="2">2<br>
<input type="checkbox" name="list" value="3">3<br>
<input type="checkbox" name="list" value="4">4<br>
<input type="checkbox" name="list" value="5">5<br>

<input type="button" name="CheckAll" value="Check All"
onClick="checkAll(document.myform.list)">
<input type="button" name="UnCheckAll" value="Uncheck All"
onClick="uncheckAll(document.myform.list)">
</form>

.....Willy
alrukus
10-27-2003, 10:31 PM
Hey Beetle :) i wanted it so it could just be another check box that when checked it would check every other box ya know? it could say check all or select all etc... :)
beetle
10-27-2003, 11:18 PM
Okay, here you go<html>
<head>
<title>Test</title>

<script type="text/javascript">

function checkAll( control, cbGroupName )
{
var cbGroup = control.form.elements[cbGroupName], i = 0, cb;
while( cb = cbGroup[i++] )
{
cb.checked = control.checked;
}
}

</script>
</head>
<body>

<form>
<input type="checkbox" onclick="checkAll( this, 'group1' );"/> Check all
<br/>
<input type="checkbox" name="group1" value="1"/><br/>
<input type="checkbox" name="group1" value="2"/><br/>
<input type="checkbox" name="group1" value="3"/><br/>
<input type="checkbox" name="group1" value="4"/><br/>
</form>

</body>
</html>If the group will ever be only 1 checkbox, this function will need some additional code to prevent errors.

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