Responsive Show / Hide Navigation Menu with JavaScript and CSS3

Category: Javascript , Menu & Navigation | May 29, 2015
Author: jokedewinter
Views Total: 14,637 views
Official Page: Go to website
Last Update: May 29, 2015
License: MIT

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Responsive Show / Hide Navigation Menu with JavaScript and CSS3

Description:

A mobile-friendly responsive navigation system that uses CSS3 media queries to detect the screen size and transforms the regular horizontal navigation into a show / hide menu with a toggle button on small screens.

How to use it:

Create a navigation menu from a nav list.

<nav id="nav" role="navigation">
  <div class="show_menu_btn" 
       data-target="#nav ul" 
       data-shown-text="Hide menu" 
       data-hidden-text="Show menu">
       Show menu
  </div>
  <ul>
    <li><a href="#">Home</a></li>
    <li><a href="#">Works</a></li>
    <li><a href="#">Products</a></li>
    <li><a href="#">About</a></li>       
    <li><a href="#">Contact</a></li>
  </ul>
</nav>

Style the navigation menu.

#nav ul { margin: 1em 0; }

#nav ul li { padding: 0.5em; }

#nav ul li:hover { background: #88b47f; }

#nav ul a {
  display: block;
  font-size: 1em;
  color: #eee;
  border-bottom: none;
}

Style the menu toggle button.

.show_menu_btn {
  width: 35%;
  margin: 0 auto;
  padding: 0.3em;
  cursor: pointer;
  text-align: center;
  background: #88b47f;
}

The CSS3 tricks for the mobile toggle menu.

@media screen and (max-width: 599px) {

.no-js .show_menu_btn { display: none; }

.no-js #nav ul { display: block; }

.js .show_menu_btn { display: block; }

.js #nav ul { display: none; }

}

@media screen and (min-width: 600px) {

.show_menu_btn { display: none; }

#nav ul { display: block; }

}

@media screen and (max-width: 599px) {

#nav ul { display: block; }

#nav ul li {
  display: block;
  text-align: center;
  border-bottom: 1px solid #6f6f7a;
}
}

@media screen and (min-width: 600px) {

#nav { overflow: hidden; }

#nav ul li {
  width: 7em;
  float: left;
  margin-right: 1em;
}
}

The JavaScript.

var show_menu = document.querySelector('.show_menu_btn');

show_menu.addEventListener('click', function(event) {
    var target = document.querySelector(show_menu.getAttribute('data-target'));

    if (target.style.display == "none") {
        target.style.display = "block";
        show_menu.innerHTML = show_menu.getAttribute('data-shown-text');

    } else {
        target.style.display = "none";
        show_menu.innerHTML = show_menu.getAttribute('data-hidden-text');
    }
});

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