Using JavaScript to manipulate HTML input (checkbox) elements via type instead of name

Question

I am implementing an HTML form with some checkbox input elements, and I want to have a Select All or DeSelect All button. However, I do not want to rely on the name

Answer 1

function findCheckBoxes(el, check) {
        for(var i=0;el.childNodes[i];i++)
        {
            var child = el.childNodes[i];
            if (child.type=="checkbox")
            {
                child.checked = check;
            }
            if (child.childNodes.length > 0)
                this.findCheckBoxes(child, check);
        }
    }