A proof of concept method for creating multiple levels of hierarchy within an object in one shot, regardless of whether they already exist

PropAddr.js

/**
 * PropAddr
 */
var PropAddr = function(obj) {
    var props = [],
        i;
    if(arguments.length === 2) {
        props = arguments[1].split('.');
    } else {
        props = Array.prototype.slice.call(arguments, 1);
    }
    if(props.length < 1) { return; }
    if(typeof obj[props[0]] === 'undefined') {
        obj[props[0]] = {};
    }
    PropAddr.apply(this, [obj[props[0]]].concat(props.slice(1)));
};

// Examples
// PropAddr(window, 'propAddrObj.level1.level2.level3');
// PropAddr(window, 'propAddrObj2', 'level4', 'level5', 'level6');