javascript - Jquery Check parent checkboxes in nested ul li

Question

I have a script that will check and uncheck all children checkboxes in a nested list. I am now trying to get it so I can check a low level checkbox and it will check all the parents only back up to the highest level. Here is a JSFiddle

<ul class="tree" id="tree">

    <li><input type="checkbox" name="account_settings" value="yes">Account Settings <!-- AND SHOULD CHECK HERE -->
        <ul>
            <li><input type="checkbox" name="one" value="one">AS One</li>
            <li><input type="checkbox" name="two" value="two">AS Two</li>
            <li><input type="checkbox" name="user_roles" value="user_roles">Users &amp; Roles <!-- SHOULD CHECK HERE -->
                <ul>
                    <li><input type="checkbox" name="user_role" value="add">Add</li>
                    <li><input type="checkbox" name="user_role" value="delete">Delete</li> <!-- CHECK HERE -->
                </ul>
            </li>
        </ul>
    </li>

    <li><input type="checkbox" name="rl_module" value="yes">RL Module</li>

    <li><input type="checkbox" name="rl_module" value="yes">Accounting
        <ul>
            <li><input type="checkbox" name="vat" value="yes">VAT</li>
            <li><input type="checkbox" name="bank_account" value="yes">Banking
                <ul>
                    <li><input type="checkbox" name="view" value="yes">View</li>
                    <li><input type="checkbox" name="crud" value="yes">CRUD</li>
                </ul>
            </li>
        </ul>
    </li>

</ul>

And the corresponding javascript:

$('input[type=checkbox]').click(function(){

    // if is checked
    if($(this).is(':checked')){

        // check all children
        $(this).parent().find('li input[type=checkbox]').prop('checked', true);

        // check all parents
        $(this).parent().prev().prop('checked', true);

    } else {

        // uncheck all children
        $(this).parent().find('li input[type=checkbox]').prop('checked', false);

    }

});

Answer 1

It looks like you want something like this

$('input[type=checkbox]').click(function(){
    if(this.checked){ // if checked - check all parent checkboxes
        $(this).parents('li').children('input[type=checkbox]').prop('checked',true);
    }
    // children checkboxes depend on current checkbox
    $(this).parent().find('input[type=checkbox]').prop('checked',this.checked); 
});

FIDDLE

If you want to check up and down hierarchy - you can do it like this

$('input[type=checkbox]').click(function(){
    // children checkboxes depend on current checkbox
    $(this).next().find('input[type=checkbox]').prop('checked',this.checked);
    // go up the hierarchy - and check/uncheck depending on number of children checked/unchecked
    $(this).parents('ul').prev('input[type=checkbox]').prop('checked',function(){
        return $(this).next().find(':checked').length;
    });
});

FIDDLE