https://stackoverflow.com/questions/55388284/how-can-i-use-knockoutjs-to-change-my-language-content

by jlspake

HTML

<!--Links jquery-->
    <script src="https://code.jquery.com/jquery-1.11.3.min.js"></script>
    <script src="https://code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.18/jquery-ui.min.js"></script>

    <script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

    <!--Links Form-validation-->
    <script src="https://knockoutjs.com/downloads/knockout-3.5.0.js"></script>


<body data-bind="using: corpo">
<nav class="navbar navbar-default navbar-fixed-top division-blue" style="border:none;" data-bind="using: navbar">
    <div class="container">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#myNavbar">
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="#">
                <img alt="roldana-EBEC" class="nav-logo-1" src="">
            </a>
        </div>

        <div class="navbar-right hidden-xs">
            <a target="_blank" href="http://bestaveiro.web.ua.pt/">
                <img alt="logo-BEST" class="nav-logo-2" src="">
            </a>
        </div>


        <div class="collapse navbar-collapse" id="myNavbar">
            <ul class="nav navbar-nav specialButton">
                <!-- ko foreach: dropdowns -->
                <li class="dropdown">
                    <a class="dropdown-toggle" data-toggle="dropdown" href="#" data-bind="html: title"></a>
                    <ul class="dropdown-menu division-blue" data-bind="foreach: menus">
                        <li><a href="#" data-bind="text: $data"></a></li>
                    </ul>
                </li>
                <!-- /ko -->
                <li>
                    <a...

JavaScript

var english = {
        navbar: ko.observable({
        	dropdowns: ko.observableArray([
            {
                title: ko.observable("About the event<span class='caret'></span>"),
                menus: ko.observableArray([
                    ko.observable("Preview Editions"),
                    ko.observable("Program"),
                    ko.observable("Subscribe"),
                    ko.observable("Testimonials")
                ])
            },
            {
                title: ko.observable("Calendar of Events<span class='caret'></span>"),
                menus: {

                }
            },
            {
                title: ko.observable("Organization<span class='caret'></span>"),
                menus: {

                }
            }
            ])
        })
    };

    var portuguese = {
        navbar: ko.observable({
            dropdowns: ko.observableArray([
            {
                title: ko.observable("Sobre a EBEC<span class='caret'></span>"),
                menus: ko.observableArray([
                    ko.observable("Edições Anteriores"),
                    ko.observable("Programa"),
                    ko.observable("Inscrição"),
                    ko.observable("Testemunhos")
                ])
            },
            {
                title: ko.observable("Mais sobre a EBEC<span class='caret'></span>"),
                menus: ko.observableArray([
                    ko.observable("FAQ"),
                    ko.observable("Edições Anteriores"),
                    ko.observable("Programa"),
                    ko.observable("Inscrição"),
                    ko.observable("Testemunhos"),
                    ko.observable("Edições Anteriores")
                ])
            },
            {
                title: ko.observable("A Organização<span class='caret'></span>"),
                menus: {

                }
            }
            ])

        })
    };

    ko.applyBindings({
        language:...