make checkbox behave like radio buttons with javascript

Question

I need to manipulate the behavior of the check boxes with javascript. They should basically behave like radio buttons (only one selectable at a time, plus unselect any previ

Answer 1

try this

and this is the javascript

(function () {
    function checkLikeRadio(tag) {
        var form = document.getElementById(tag);//selecting the form ID 
        var checkboxList = form.getElementsByTagName("input");//selecting all checkbox of that form who will behave like radio button
        for (var i = 0; i < checkboxList.length; i++) {//loop thorough every checkbox and set there value false. 
            if (checkboxList[i].type == "checkbox") {
                checkboxList[i].checked = false;
            }
            checkboxList[i].onclick = function () {
                checkLikeRadio(tag);//recursively calling the same function again to uncheck all checkbox
                checkBoxName(this);// passing the location of selected checkbox to another function. 
            };
        }
    }

    function checkBoxName(id) {
        return id.checked = true;// selecting the selected checkbox and maiking its value true; 
    }
    window.onload = function () {
        checkLikeRadio("form");
    };
})();