Javascript function to recursively convert all keys in a Javascript object from underscore_naming to camelCase. This includes nested objects and objects within nested arrays.

to_camel_case.js

var ConvertKeysToCamelCase = function(item_to_convert) {
    var stringToCamelCase = function(string_to_convert) {
        return string_to_convert.replace(/-([a-z])/g, function (g) {return g[1].toUpperCase();});
    };
    var convertKey = function(key_to_convert, key_to_replace) {
        if (key_to_convert.indexOf('_') != -1) {
            key_to_convert = key_to_convert.replace(/_/g,'-');
            key_to_convert = stringToCamelCase(key_to_convert);
            item_to_convert[key_to_convert] = item_to_convert[key_to_replace];
            delete item_to_convert[key_to_replace];
        }
    }
    var i = 0;
        for (var key in item_to_convert) {
            if (typeof item_to_convert[key] != 'undefined') {
                if (typeof item_to_convert[key] === 'object' && !(item_to_convert[key] instanceof Array)) {
                    self.ConvertKeysToCamelCase(item_to_convert[key]);
            }
            if (item_to_convert[key] instanceof Array) {
                for (var i = 0; i < item_to_convert[key].length; i++) {
                    self.ConvertKeysToCamelCase(item_to_convert[key][i]);
                }
            }
            var temp_string = key;
            convertKey(temp_string, key);
        }
        i = ++i;
    }
    return item_to_convert;
};