I want the navigation bar to appear only upon scrolling, but when I refresh the page it is already visible, and then vanishes as I start scrolling

I'm working on a project where I want the navigation bar to only appear after scrolling a certain distance down the page. However, I've noticed that when I refresh the browser, the navigation bar appears immediately and then disappears once I start scrolling. After that initial glitch, everything works as intended.

Is there a way to make sure the navigation bar stays hidden when the page is refreshed?

Below is the JavaScript code I am using:

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

    <script type="text/javascript">
      $(document).ready(function(){$(window).scroll(function(){
            if( $(this).scrollTop() > 4000){
              $('#navigation').fadeIn( "slow", "linear" )
            } else {
              $('#navigation').fadeOut( "slow", "linear" )
            }
          })
        })
     </script>

And here is the CSS code for styling the navigation bar:

nav ul {
        position:fixed;
        list-style: none;
        width: 1100px;
        height: 40px;
        margin: 30px 222px auto;
        padding: 20px 20px 20px 20px;
        background-color: #798c39;
        text-align: center;
        }

Answer №1

Consider exploring an alternative approach. Rather than relying solely on jQuery, I suggest leveraging pure JavaScript and CSS for better performance and effectiveness.

const nav = document.querySelector('#navigation');

function showNav(){
    nav.classList.add('show');
}

function hidewNav(){
    nav.classList.remove('show');
}
var currPos = window.scrollY;
document.addEventListener('scroll', () => {
  if (window.scrollY < currPos) {
  //scroll up
    hidewNav();
  } else {
  //scroll down
    showNav();
  }
  currPos = window.scrollY;
});
body {
  margin: 0;
  height: 2000px;
  margin-top: 100px;
}

nav {
  position: fixed;
  list-style: none;
  width: 100%;
  height: 70px;
  top: 0;
  margin: 0;
  background-color: #798c39;
  text-align: center;
  transform: translateY(-100px);
  transition: 0.3s;
}

.show {
  transform: translateY(0);
}
<html>
  <head>

  </head>
  <body>
    <header>
      <nav id="navigation">
        <ul>

        </ul>
      </nav>
    </header>
    <main>
   
    </main>
  </body>
</html>

Answer №2

Whether the space in the navbar is reserved or not on load will determine the outcome.

Based on the JavaScript provided, it seems likely that the space is reserved, so you should ensure it starts with opacity: 0.

To make this adjustment in your code, simply add the following to your stylesheet:

nav {
  opacity: 0;
}

If the fadeIn/fadeOut keyframes impact dimensions as well as opacity, those changes will need to be considered. Feel free to share the keyframes for further assistance.

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