Object Path

objectpath.js

// Gets value of object given a string path
// Example: objectPathGet({a: {b: {c: {d: "hello"}}}}, "a.b.c.d") // returns "hello"
function objectPathGet(obj, path, _default) {
    try {
        var keys = path.split(".");
        return (function _get(obj) {
            var child = obj[keys.shift()];
            return keys.length ? _get(child) : child;
        })(obj);
    } catch(err) {
        return _default;
    }
}

// Creates paths that don't exist
// Example: var obj = {}
// objectPathSet(obj, "a.b.c", "hello") // => obj = {a: {b: {c: "hello"}}}
function objectPathSet(obj, path, value) {
    var keys = path.split(".");
    return (function _set(obj) {
        var key = keys.shift();
        if (keys.length) {
            if (typeof obj[key] !== 'object') {
                obj[key] = {};
            }
            _set(obj[key]);
        } else {
            obj[key] = value;
        }
    })(obj);
}