Check/Uncheck All

[Grishma Dube]

I want a code to provide a facility to check/uncheck all checkboxes of the same table.

I also want if the checkbox is disabled, then it shud not respond to the action. I've following code for doing this :-

  
function uncheckAll( objCheckBox )
{
  var objSelectAll = document.getElementById("C0");
  if (!( objCheckBox.checked ))
objSelectAll.checked = false;
  }
  function checkAll(){
    for (var ctr=0;ctr<document.forms[0].elements.length;ctr++)
    {
var e=document.forms[0].elements[ctr];
if ((e.name != 'C0') && (e.type=='checkbox')) 
 {
  if(!e.disabled)
  {
     e.checked=document.forms[0].C0.checked;
  }
 }
    }
}

This code is working fine. Only problem with this is... since I'm checking checkboxes, it will check all the boxes in the same form. I just want to check boxes belong to the same table or section.

Help me in solving this.....

[Eric Pascarello]

You can try somcething like this:

arrElem = document.getElementById("theTable").getElementsByTagName("input");
for(i=0;i<arrElem.length;i++){
if(arrElem[i].type.toLowerCase()=="checkbox")arrElem[i].checked=!(document.FormName.C0.checked)
}

Eric

[Grishma Dube]

Thanx for ur reply.

I am not very much familiar with Javascript. So it will help if you elaborate more on this.

I need to write a function in Javascript for following specs:

1) Check/Uncheck all checkboxes on click of checkbox in the header.
2) The checkbox in the header shud be unchecked, if any of the checkboxes
is deslected.
3) If any of the checkbox is disabled, it shud not be checked.
4) It shud function as mentioned above even if there is just one row of checkbox in the table

The function i've pasted above is catering all the needs, except one issue with this func. If i've check box anywhere else on the page not belonging to the table, then also it is getting checked.

Pls help me in solving this problem.

TIA

Grishma.
[ June 23, 2005: Message edited by: Grishma Dube ]