Flatten Nested JSON data to Form Data

gistfile1.js

flattenNestedFormJSON = function(json) {
    if (typeof json === "string" ||
        typeof json === "number" ||
        typeof json === "boolean" ||
        json === null) {
        return json;
    }

    if (typeof json !== "object") {
        return null;
    }
    
    var formDataJson = {};
    for (var property in json) {
        if (!json.hasOwnProperty(property)) {
            continue;
        }

        var value = json[property];
        if (value === null || value === undefined) {
            continue;
        }

        if ($.isArray(value)) {
            for (var i = 0; i < value.length; i++) {
                var elementProperty = property + '[' + i + ']';
                formDataJson[elementProperty] = flattenNestedFormJSON(value[i]);
            }
        } else {
            formDataJson[property] = value;
        }
    }

    return formDataJson;
};