Sitecore Hackathon UpdateItem

UpdateItem.js

UpdateItem: function () {
    var itemService = new entityService({
        url: "/sitecore/api/ssc/DevToolKit-Controllers/SitecoreItem"
    });

    var querystring = this.GetQueryString();
    var itemid = querystring["itemid"];

    var message = this.messagePanel;
    var fieldsToReset = this.GetItemsToReset();

    var result = itemService.fetchEntity(itemid).execute().then(function (item) {

        for (var i = 0; i < item.Fields.underlying.length; i++) {
            var field = item.Fields.underlying[i];

            if ($.inArray(field.Name, fieldsToReset) != -1) {
                field.RevertToStandardValue = true;
            }
        }

        item.save().then(function (savedItem) {
            message.addMessage("notification", { text: "Item updated successfully", actions: [], closable: true, temporary: true });
        }).done(this.GetFields());
    });
},