Show DIV if 2 specific Checkboxes are checked, if only one checked show different DIV

Question

What I want to achieved is a way to show a div if 2 checkboxes are checked and show something else if only one is checked else if 3 checkboxes are checked show a different div once again. I'm trying to have a working version of it.... Any help?

Take a look to this example: http://jsfiddle.net/downloadtaky/FpF7T/

Answer 1

function toggleContent(){
    document.getElementById('divOne').style.display = 
    document.getElementById('divTwo').style.display = 'none';
    if(document.getElementById('firstCheckbox').checked && 
    document.getElementById('secondCheckbox').checked){
            document.getElementById('divOne').style.display = 
            document.getElementById('divTwo').style.display'';
    }
    else if(document.getElementById('firstCheckbox').checked){
        document.getElementById('divOne').style.display = '';
    }
}

That should give you a good idea of how this is done. Try using http://jquery.com/ for simple hide/show things, very easy.

Answer 2

Change the markup to

<table>
    <tr>
    <td><input type="checkbox" name="opzioni" data-grp="vano1gop1" value="van ass obb 1g op1" class="opzioni" />Opzione 1</td>
    <td><input type="checkbox" name="opzioni" data-grp="vano1gop2,vano1gop3" value="van ass obb 1g op1" class="opzioni" />Opzione 2</td>
    <td><input type="checkbox" name="opzioni" data-grp="vano1gop4" value="van ass obb 1g op1" class="opzioni" />Opzione 3</td>
    </tr>
</table>
<div id="vano1gop1" class="vano1grp">Hai scelto l'opzione 1</div>
<div id="vano1gop2" class="vano1grp">Hai scelto l'opzione 2</div>
<div id="vano1gop3" class="vano1grp">Hai scelto l'opzione 3</div>
<div id="vano1gop4" class="vano1grp">Hai scelto l'opzione 4</div>

and then use the below JS

$(function(){
    $('.opzioni').click(function(){
        var checked = $(this).attr("checked");
        var grps = $(this).data("grp").split(",");
        $.each(grps, function(i, value){
            var elem = $("#" + value);
            checked ? elem.show() : elem.hide();
        });
    });
});

Demo