gistfile1.js

function setNestedJSON (on, path, value) {
	if (!(path instanceof Array)) {
		path = path.split('\-');
	}

	if (path && path.length > 0) {
		var current = on;
		var key = null;

		while((key = path.shift()) != null) {
			// make sure key exists at the current level
			if (!current[key]) {
				current[key] = {};
			}
			if (path.length == 0) {
				// last level, set value
				current[key] = value;
				return true;
			}
			// advance one level
			current = current[key];
		}
	}
	return false;
}

function deleteNestedJSON (on, path) { // TODO....
	if (!(path instanceof Array)) {
		path = path.split('\-');
	}


	if (path && path.length > 0) {
		if (path.length == 1) {
			delete on[path[0]]
		}
		if (on[path[0]] instanceof Object) { 
			deleteNestedJSON(on[path[0]], path.slice(1))
		}
	}
}

function cleanNestedJSON (obj) {
	if (obj instanceof Object) {
		var keys = Object.keys(obj)
		for (var i = keys.length - 1; i >= 0; i--) {
			if (obj[keys[i]] instanceof Object) {
				cleanNestedJSON(obj[keys[i]])
				if (Object.keys(obj[keys[i]]).length === 0) {
					delete obj[keys[i]]
				}
			}
		}
	}
}