Select / Unselect all checkbox by selecting single check box

About

You can use this free javascript code to Select / Unselect all the checkboxes by selecting a single check box.

Features

a)There can be any number of checkboxes for selection.
b)All the checkboxes can be selected just by selecting one check box in common.
c)Also the same can be used to check and uncheck all in a single click.

Preview

Select or Unselect all Checkboxes:

Code

<!--        Script by hscripts.com          -->
<!--        copyright of HIOX INDIA         -->
<!-- Free javascripts @ http://www.hscripts.com -->
<script type="text/javascript">
checked=false;
function checkedAll (frm1) {
	var aa= document.getElementById('frm1');
	 if (checked == false)
          {
           checked = true
          }
        else
          {
          checked = false
          }
	for (var i =0; i < aa.elements.length; i++) 
	{
	 aa.elements[i].checked = checked;
	}
      }
</script>
<!-- Script by hscripts.com -->

Release Date - 20.06.2007

Get free version without ©copyright link for just 5

For customization of this script or any script development, contact us at support@hscripts.com

Usage

a) Now just copy the above free JavaScript code in your web page inside the head tag.
b) Create any number of check boxes and place in a form and name that form as "frm1"

Ex:-
<form id ="frm1">
<input type="checkbox" name="chk1">
<input type="checkbox" name="chk2">
</form>

c) Create a common checkbox in the form and name its as "checkall". Now Call the function checkedAll(frm1) by using onclick event.

Ex-
<input type='checkbox' name='checkall' onclick='checkedAll(frm1);'>

License

- This javascript (misspelled as java script)/HTML code is given under GPL License
- i.e. Free use for those who use it as it is.
- Free, if your modification does not remove our copyright information and links.
- Detailed License information can be found here
- You can purchase the script if your requirements does not meet GPL License terms.