Question

I am trying to create a select all, unselect all options like we see in email inboxes for a group of checkboxes. I have added an example for this. The working model that I am trying to get is when a I click on checkbox, it should select and unselect that group with a particular value. Also even if we uncheck any single name form the list, it should uncheck the main “select all” checkbox. I’ve added a jsfiddle, but it doesnt work properly.

$(document).ready(function(){
    $("#selectAll").live("click",function(e){
        e.preventDefault();
        e.stopImmediatePropagation();
        var clickedValue=$(this).attr('class');
        clickedValue=clickedValue.replace("select", "");
        $("#modalEntity").attr("value", "group"+ clickedValue).attr("checked", true);      
    });
});

http://jsfiddle.net/EBxSu/

Answer 1

I updated your code a bit removing multiple IDs and handling the various scenario requested (clearing the select all check box if user selects a child). Also updated your jQuery using .on() rather than .live().

jQuery looks like:

$(function(){
  $('.selectAll').on('click', function(evt){
    var group = $(this).attr('data-group'),
        isChecked = !!($(this).prop('checked'));
    $('input[value="' + group + '"]').prop('checked', isChecked);    
  })

  $('.entity').on('click', function(evt){
    var group = $(this).attr('value'),
        siblings = $('input[value="' + group + '"]'),
        isChecked = true;
    siblings.each(function(idx, el){
      if(!$(el).prop('checked')) {
        isChecked = false;
        return;
      }
    })
    $('.selectAll[data-group="' + group + '"]').prop('checked', isChecked);
  })
})

And the updated HTML:

<ul>
<li>
Country
<ul>
<input type="checkbox" class="selectAll" data-group="group1">Select/Deselect All Country
<li>
<input class="entity" type="checkbox" value="group1" name="India">India
<input class="entity" type="checkbox" value="group1" name="UAE">UAE
...
</ul>
</li>
</ul>

Here’s the fiddle:
http://jsfiddle.net/nBh4L/2/

Thanks!
Jack