Submit/Insert Data in SharePoint list using CSOM

function InsertResponseData(IsCorrect) {

        try {

            var context = new SP.ClientContext.get_current();

            var web = context.get_web();

            var list = web.get_lists().getByTitle("responseListName");

            var listItemCreationInfo = new SP.ListItemCreationInformation();

            var newItem = list.addItem(listItemCreationInfo);

            newItem.set_item('QuestionID', json.d.Id);

            newItem.set_item('Answer', selectedVaue);

            newItem.set_item('Correct', IsCorrect);

            newItem.update();

            context.load(newItem);

            context.executeQueryAsync(Function.createDelegate(this, this.success), Function.createDelegate(this, this.failed));

        }

        catch (e) {

           alert('error:' + e.Message);

        }

    }

    function success() { }

    function failed(sender, args) { alert('failed.Message:' + args.get_message()); }