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HTML

              
                <nav id="main_nav"></nav>

<h3>Menu modeled in Kontent</h3>
<p>No part of the navigation is hardcoded, it's all dynamically generated based on dedicated content items retrieved from your Kontent project. </p>
<p>Uncomment the CSS to see a proper navigation menu.</p>
              
            
!

CSS

              
                /* 

* {
  margin: 0;
  padding: 0;
}

body {
  font: sans-serif;
  font-size: 12px;
  background: #eee;
  margin: 1em;
  padding: 1.5em;
}

h1 {
  display: block;
  font-size: 2em;
  font-weight: 400;

}

a {
  color: #06c;
}

nav {
  min-height: 35px;
}

nav ul {
  background: #ccc;
  float: left;
  -webkit-transition: .5s;
  transition: .5s;
}

nav li {
  float: left;
  position: relative;
  width: 150px;
  list-style: none;
  -webkit-transition: .5s;
  transition: .5s;
  border-bottom: 1px solid #999;
}

nav > ul > li > a, h1 {
  text-transform: uppercase;
}

nav a {
  display: block;
  text-decoration: none;
  padding: 5px 15px;
  color: #000;
}

nav ul ul {
  position: absolute;
  left: 0;
  top: 100%;
  visibility: hidden;
  opacity: 0;
}

nav ul ul ul {
  left: 100%;
  top: 0;
}

nav li:hover, nav li:hover li {
  background: #ddd;
}

nav li li:hover, nav li li:hover li {
  background: #bbb;
}

nav li li li:hover {
  background: #999;
}

nav li:hover > ul {
  visibility: visible;
  opacity: 1;
}

 */
              
            
!

JS

              
                // Use jQuery to request the Main menu content item using Kentico Cloud Delivery API.
$.ajax({
  type: "GET",
  url: "https://deliver.kenticocloud.com/8d20758c-d74c-4f59-ae04-ee928c0816b7/items/root_navigation_item?depth=5",
  dataType: "json",
  success: processData,
  error: function() {
    alert("failed");
  }
});

// Process the retrieved data using the itemsToList function and display it on the page.
function processData(data) {
  var rootMenuItems = data.item.elements.subitems.value;
  var allLinkedContent = data.modular_content;
  
  var menuHtml = itemsToList(rootMenuItems, allLinkedContent, 0);
  $("#main_nav").append(menuHtml);
}

// Limit recursion depth in case of cyclic references between content items. 
// (Otherwise your menu would be infinitely large and your site would crash.)
const DEPTH_LIMIT = 5;

// Generate menu HTML by recursively transforming content items to list elements.
function itemsToList(itemCodenames, linkedContent, currentDepth) {
    if(currentDepth >= DEPTH_LIMIT) {
      return "";
    }
    var result = "<ul>";
    for(let itemCodename of itemCodenames){
      let title = linkedContent[itemCodename].elements.title.value;
      let url = linkedContent[itemCodename].elements.url.value;
      console.log(linkedContent[itemCodename])
      if (linkedContent[itemCodename].elements.subitems) {
        let subitems = linkedContent[itemCodename].elements.subitems.value;
        // console.log(title, url);
        result += "<li><a href='#/"+ url +"' title='/"+ url +"'>" + title + "</a>"
               + itemsToList(subitems, linkedContent, currentDepth+1) +"</li>";  
      }
      else {
        result += "<li><a href='#/"+ url +"' title='/"+ url +"'>" + title + "</a></li>";  
      }
    }
    result += "</ul>";
    return result;
  }
              
            
!
999px

Console