Question

I am trying to write some javascript which will check the checkboxes within a div where the checkbox name matches the given name. Here is what I have, but it isn’t doing anything:

function checkbox_control(container_id,element_name,status) {
    var children = document.getElementById(container_id).childNodes;
    alert(element_name);
    for(var b=0; b < children.length; b++) {
        if(children[b].name == element_name){
            children[b].checked = status;
        }
    }
}

Answer 1

Try getElementsByTagName instead of childNodes (it makes recursive search of elements). LIke this:

function checkbox_control(container_id,element_name,status) {
    var checkboxes = document.getElementById(container_id).getElementsByTagName('input');
    for(var b=0; b < checkboxes.length; b++) {
        if(checkboxes[b].name == element_name){
            checkboxes[b].checked = status;
        }
    }
}