I recently ran into a situation where I wanted to be able to search a JSON object of indeterminate shape and size with arbitrary nested arrays of objects. To do this I have put together a simple method to allow recursive traversal of nested objects and arrays of objects with Javascript to allow you to return an array of matched object results based on a key value.

When SharePoint 2013 came out lot of great user object functionality came to the ECMAScript client object model (or Javascript to everyone else), unfortunatly I had naively assumed when reading the specification that this functionality was also availiable in SharePoint 2010. Due to a lack of the  SP.Web.get_siteUsers() method I suddenly found myself in need of a custom set of helpers to manage the ensuring and permission assignment of users for a custom content management SharePoint 2010 based Javascript application.