这是个例子，JS面向对象写法的其中一种，可举一反三

<script type="text/javascript">
    var objCommon = function() {
        var o = new Object();
        o.a = 123;
        o.b = 456;
        o.f = function() {
            document.write("<br />js面向对象输出的文字" + (o.a + o.b));
        }
        return o;
    }

    var ss = new objCommon();
    ss.f();

</script>