Parsing KnockoutJS model into flat key-value form data

ko.parse.js

var parseValues = function (data, callback, prefix, postfix) {
            postfix = postfix || "";
            prefix = prefix || "";
            for (var key in data) {
                if (data[key] == null) {
                    continue;
                }
                 if ( Object.prototype.toString.call( data[key] ) === '[object Array]') {
                    parseValues(data[key], callback, prefix + key + postfix + "[", "]");
                 } else if (typeof data[key] == "object") {
                     parseValues(data[key], callback, prefix + key + postfix + ".");
                 } else {
                    callback(prefix + key, data[key]);
                }
            }
};

ko.submitform.js

ko.utils.submitForm = function (urlOrForm, data, options) {
    options = options || {};
    var params = options['params'] || {};
    var includeFields = options['includeFields'] || this.fieldsIncludedWithJsonPost;
    var url = urlOrForm;

    // If we were given a form, use its 'action' URL and pick out any requested field values
    if ((typeof urlOrForm == 'object') && (ko.utils.tagNameLower(urlOrForm) === "form")) {
        var originalForm = urlOrForm;
        if (originalForm && originalForm.action)
            url = originalForm.action;
        else {
            url = window.location.href;
        }
        for (var i = includeFields.length - 1; i >= 0; i--) {
            var fields = ko.utils.getFormFields(originalForm, includeFields[i]);
            for (var j = fields.length - 1; j >= 0; j--)
                params[fields[j].name] = fields[j].value;
        }
    }

    data = ko.utils.unwrapObservable(data);
    var form = document.createElement("form");
    form.style.display = "none";
    form.action = url;
    form.method = options["method"] || "post";
    parseValues(data, function(key,value){
        var input = document.createElement("input");
        input.name = key;
        input.value = value;
        form.appendChild(input);
    });
    for (var key in params) {
        var input = document.createElement("input");
        input.name = key;
        input.value = params[key];
        form.appendChild(input);
    }
    document.body.appendChild(form);
    options['submitter'] ? options['submitter'](form) : form.submit();
    setTimeout(function () { form.parentNode.removeChild(form); }, 0);
};

ko.utils.buildQueryUrl.js

ko.utils.buildQueryUrl = function (data, excludeKeysList, includeDefaultValues) {
    var query = "";
    parseValues(data, function (key, value) {
        if ((value || includeDefaultValues) && !isKeyExcluded(key, excludeKeysList)) {
            query += encodeURIComponent(key) + "=" + encodeURIComponent(value) + "&";
        }
    });
    return query;
};

Coverting from this

{"dealId":"51a33f96cb5c8135042a881b","tags":[{"id":1,"title":"draw trumps","selected":true},{"id":3,"title":"establish side suit","selected":true},{"id":4,"title":"communication","selected":true}]}

to this

tags[0].id:1
tags[0].title:draw trumps
tags[0].selected:true
tags[1].id:3
tags[1].title:establish side suit
tags[1].selected:true
tags[2].id:4
tags[2].title:communication
tags[2].selected:true
dealId:51a33f96cb5c8135042a881b