webdev{docs}

Introduction

index.html

<html>
<head>
  <script src="https://code.jquery.com/jquery.min.js"></script>
</head>
<body>
  <header>
    <!-- NAVIGATION BAR START HERE -->
    <div id="nav-placeholder"></div>
    <script>
      $.get("nav.html", function(data){
          $("#nav-placeholder").replaceWith(data);
      });
    </script>
    <!-- NAVIGATION BAR ENDS HERE -->
  </header>
</body>
</html>
<nav>
  <ul>
    <li><a href="index.html">Home</a></li>
    <li><a href="about.html">About us</a></li>
    <li><a href="contact.html">Contact</a></li>
  </ul>
</nav>