How to limit the number of checkboxes to be selected using php???
ashiiiish 0 Newbie Poster
Recommended Answers
Jump to PostCheckboxes are limited via HTML.. They'll be already limited when they appear in the page you create.
Jump to PostYou need JS. If you're using jQuery, you could do something like this (if not, it's the same thing but it would take quite a bit more coding):
$('input:checkbox').click(function(){ $('input:checkbox:not(:checked)').attr('disabled', $('input:checkbox:checked').length >= 3 ? 'disabled' : ''); });
Jump to PostWell, you could also count the amount of selected boxes with php and echo a warning if it's > 3, of course, but personally I'd definitely use JS for this.
All 11 Replies
vibhaJ 126 Master Poster
Using php?? OR using js?
Post your code.
Pro2000 29 Posting Whiz
Checkboxes are limited via HTML.. They'll be already limited when they appear in the page you create.
ashiiiish 0 Newbie Poster
suppose i am posting 5 checkboxes and i want users to select any 3 of them then how to do it???
karthik_ppts 81 Posting Pro
can you please post your code here?
twiss 155 Veteran Poster
You need JS. If you're using jQuery, you could do something like this (if not, it's the same thing but it would take quite a bit more coding):
$('input:checkbox').click(function(){
$('input:checkbox:not(:checked)').attr('disabled', $('input:checkbox:checked').length >= 3 ? 'disabled' : '');
}); ashiiiish 0 Newbie Poster
my code is too long its about 327 checkboxes in different section i need to limit the selection in all of the sections
its simply lyk i hav putd some checkboxs and nothing and is using php for other things and nothing else
twiss 155 Veteran Poster
Well, you could also count the amount of selected boxes with php and echo a warning if it's > 3, of course, but personally I'd definitely use JS for this.
divyakrishnan 20 Junior Poster
Try this code It using Java script
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script>
function check()
{
var len=document.f.ck.length;
var ck=document.f.ck;
var l=0;
for(var i=0;i<len;i++)
{
if(ck[i].checked==true)
{
l++;
}
if(l>3)
{
ck[i].checked = false ;
}
}
}
</script>
</head>
<body>
<form id="form1" name="f" method="post" action="">
<p>
<input name="ck" type="checkbox" id="ck" value="checkbox" onclick="check()"/>
PHP</p>
<p>
<input name="ck" type="checkbox" id="ck" value="checkbox" onclick="check()"/>
JSP</p>
<p>
<input name="ck" type="checkbox" id="ck" value="checkbox" onclick="check()"/>
JAVA</p>
<p>
<input name="ck" type="checkbox" id="ck" value="checkbox" onclick="check()"/>
CSS</p>
<p>
<input name="ck" type="checkbox" id="ck" value="checkbox" onclick="check()" />
HTML</p>
<p>
<input type="submit" name="Submit" value="Submit" />
</p>
</form>
</body>
</html> twiss 155 Veteran Poster
I think it's more user friendly to disable the checkboxes, but well. That's a possibility too.
divyakrishnan 20 Junior Poster
Using PHP I dnt have any idea.
ashiiiish 0 Newbie Poster
Thanx 4 ur help I m done wid this
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