私人欄位方法重寫封裝

<script language="javascript">

    function p() {
        var self = this;
        var m = "p";

        var getName = function () { return m; }

        self.alert = function () {
            var res = eval("(" + getName + ")()");
            alert(res);
        }

        //virtual area
        self.virtual_getName = function (action) {
            getName = action;
        }
    }

    function c() {
        var self = this;

        var init = function () {
            var override = /^override_(\w+)$/gi;
            for (var o in self) {
                var key = override.exec(o);
                if (key != null) {
                    self["virtual_" + key[1]](self["override_" + key[1]]());
                }
            }
        }

        //override area
        var getName = function () {
            return m + m;
        }

        self.override_getName = function () {
            return getName;
        }

        init();
    }
    c.prototype = new p();

    var obj = new c();
    obj.alert();
</script>