Setting a depth in an object literal by a string of dot notation?

Question

There are plenty of solutions out there to check/access an object literal giving a string of dot notation, but what I need to do is SET an object literal based on a string o

Answer 1

My version:

function setDepth(obj, path, value) {
    var tags = path.split("."), len = tags.length - 1;
    for (var i = 0; i < len; i++) {
        obj = obj[tags[i]];
    }
    obj[tags[len]] = value;
}

Working demo: http://jsfiddle.net/jfriend00/Sxz2z/