How TO - Hide Menu on Scroll

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Learn how to hide a navigation menu on scroll down with CSS and JavaScript.

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How To Hide Navbar on Scroll Down

Step 1) Add HTML:

Create a navigation bar:

Example

<div id="navbar">
<a href="#home">Home</a>
<a href="#news">News</a>
<a href="#contact">Contact</a>
</div>

Step 2) Add CSS:

Style the navigation bar:

Example

#navbar {
  background-color: #333; /* Black background color */
  position: fixed; /* Make it stick/fixed */
top: 0; /* Stay on top */
  width: 100%; /* Full width */
  transition: top 0.3s; /* Transition effect when sliding down (and up) */
}

/* Style the navbar links */
#navbar a {
float: left;
display: block;
color: white;
text-align: center;
padding: 15px;
text-decoration: none;
}

#navbar a:hover {
  background-color: #ddd;
color: black;
}

Step 3) Add JavaScript:

Example

/* When the user scrolls down, hide the navbar. When the user scrolls up, show the navbar */
var prevScrollpos = window.pageYOffset;
window.onscroll = function() {
var currentScrollPos = window.pageYOffset;
if (prevScrollpos > currentScrollPos) {
document.getElementById("navbar").style.top = "0";
} else {
document.getElementById("navbar").style.top = "-50px";
}
prevScrollpos = currentScrollPos;
}

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