JavaScript Object Extend

js_obj_extend.js

function extend(o, plus) {
    var r = {},
        i;
    for (i in o) {
        if (o.hasOwnProperty(i)) {
            r[i] = o[i];
        }
    }
    if (plus) {
        for (i in plus) {
            if (plus.hasOwnProperty(i)) {
                r[i] = plus[i];
            }
        }
    }
    return r;
}