Uncheck a checkbox if another checked with javascript

Question

I have two checkbox fields. Using Javascript, I would like to make sure only one checkbox can be ticked. (e.g if one checkbox1 is ticked, if checkbox2 is ticked, checkbox1 w

Answer 1

Well you should use radio buttons, but some people like the look of checkboxes, so this should take care of it. I've added a common class to your inputs:

function cbChange(obj) {
    var cbs = document.getElementsByClassName("cb");
    for (var i = 0; i < cbs.length; i++) {
        cbs[i].checked = false;
    }
    obj.checked = true;
}

Demo: http://jsfiddle.net/5uUjj/