Getting Started

jqxNavigationBar represents a jQuery widget that has header and content sections(like tabs). Click headers to expand or collapse the content. Optionally you can change the default toggle mode to double-click or mouseover.
Every UI widget from jQWidgets toolkit needs its JavaScript files to be included in order to work properly.

The first step is to create html page and add links to the javascript files and css dependencies to your project. The jqxNavigationBar widget requires the following files: 

<head>
    <link rel="stylesheet" href="../../jqwidgets/styles/jqx.base.css" type="text/css" />
    <script type="text/javascript" src="../../scripts/jquery-1.11.1.min.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxcore.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxnavigationbar.js"></script>
<script async src="https://www.googletagmanager.com/gtag/js?id=G-2FX5PV9DNT"></script><script>window.dataLayer = window.dataLayer || [];function gtag(){dataLayer.push(arguments);}gtag('js', new Date());gtag('config', 'G-2FX5PV9DNT');</script></head>

The next step is to create a DIV element within the body of the html document and add pairs of DIV elements for the header and content of each item. 
<div id='jqxnavigationbar'>
    <!--Header-->
    <div>
        Header 1</div>
    <!--Content-->
    <div>
        Content 1
    </div>
    <!--Header-->
    <div>
        Header 2</div>
    <!--Content-->
    <div>
        Content 2
    </div>
    <!--Header-->
    <div>
        Header 3</div>
    <!--Content-->
    <div>
        Content 3
    </div>
</div>

The last step is to initialize the widget by adding the following script to the html document: 
<script type="text/javascript">
    $(document).ready(function () {
        // Create jqxNavigationBar
        $("#jqxnavigationbar").jqxNavigationBar({ width: 400, height: 400 });
    });
</script>

To call a function(method), you need to pass the method name and parameters(if any) in the jqxNavigationBar’s constructor. 
$("#jqxNavigationBar").jqxNavigationBar(‘expandAt’, 1);
To get the result of a function(method) call, you need to pass the method name in the jqxNavigationBar’s constructor and parameters(if any). 
var content = $("#jqxNavigationBar").jqxNavigationBar(‘getContentAt’, 0 );
To set a property(option), you need to pass the property name and value(s) in the jqxNavigationBar's constructor. 
$("#jqxNavigationBar").jqxNavigationBar({ disabled: true });
To get a property(option), you need to pass the property name to the jqxNavigationBar's constructor. 
var disabled = $("#jqxNavigationBar").jqxNavigationBar('disabled');
To bind to an event of a UI widget, you can use basic jQuery syntax. Let’s suppose that you want to get the selected item when the user clicks. The example code below demonstrates how to bind to the ‘expandedItem’ event of jqxNavigationBar. 
$("#jqxnavigationbar").on('expandedItem', function (event) {
    var index = event.item + 1;
    alert("Expanded: Header " + index);
});

Basic Sample

<!DOCTYPE html>
<html lang="en">
<head>
    <title>jQuery Navigation Bar Sample</title>
    <link rel="stylesheet" href="../../jqwidgets/styles/jqx.base.css" type="text/css" />
    <script type="text/javascript" src="../../scripts/jquery-1.11.1.min.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxcore.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxexpander.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxnavigationbar.js"></script>
    <script type="text/javascript">
        $(document).ready(function () {
            // Create jqxNavigationBar
            $("#jqxnavigationbar").jqxNavigationBar({ width: 200, height: 200});
            $("#jqxnavigationbar").bind('expandedItem', function (event) {
                var index = event.item + 1;
                alert("Expanded: Header " + index);
            });
        });
    </script>
<script async src="https://www.googletagmanager.com/gtag/js?id=G-2FX5PV9DNT"></script><script>window.dataLayer = window.dataLayer || [];function gtag(){dataLayer.push(arguments);}gtag('js', new Date());gtag('config', 'G-2FX5PV9DNT');</script></head>
<body class='default'>
    <div id='jqxnavigationbar'>
        <!--Header-->
        <div>
            Header 1</div>
        <!--Content-->
        <div>
            Content 1
        </div>
        <!--Header-->
        <div>
            Header 2</div>
        <!--Content-->
        <div>
            Content 2
        </div>
        <!--Header-->
        <div>
            Header 3</div>
        <!--Content-->
        <div>
            Content 3
        </div>
    </div>
</body>
</html>

The result of the above code is: