Drop-down menu implemented by HTML+CSS3+JS

Drop-down menu implemented by HTML+CSS3+JS

Achieve results

html

<div class="container">
  <h1 class="title">Dropdown Menu</h1>
  <ul>
    <li class="dropdown">
      <a href="#" data-toggle="dropdown">First Menu <i class="icon-arrow"></i></a>
      <ul class="dropdown-menu">
        <li><a href="#">Home</a></li>
        <li><a href="#">About Us</a></li>
        <li><a href="#">Services</a></li>
        <li><a href="#">Contact</a></li>
      </ul>
    </li>
    <li class="dropdown">
      <a href="#" data-toggle="dropdown">Second Menu <i class="icon-arrow"></i></a>
      <ul class="dropdown-menu">
        <li><a href="#">Home</a></li>
        <li><a href="#">About Us</a></li>
        <li><a href="#">Services</a></li>
        <li><a href="#">Contact</a></li>
      </ul>
    </li>
    <li class="dropdown">
      <a href="#" data-toggle="dropdown">Third Menu <i class="icon-arrow"></i></a>
      <ul class="dropdown-menu">
        <li><a href="#">Home</a></li>
        <li><a href="#">About Us</a></li>
        <li><a href="#">Services</a></li>
        <li><a href="#">Contact</a></li>
      </ul>
    </li>
  </ul>
  <p class="text-center">
    See this same menu only with CSS3: <a href="https://codepen.io/pedronauck/pen/jaluz" target="_blank">https://codepen.io/pedronauck/pen/jaluz</a>
  </p>
</div>

CSS

@import url("https://fonts.googleapis.com/css?family=Lato:300,400,700,900");
@import url(https://fonts.googleapis.com/css?family=Pacifico);
body {
  font-family: "Lato", Helvetica, Arial;
  font-size: 16px;
}

.text-center {
  text-align: center;
}

*, *:before, *:after {
  -webkit-border-sizing: border-box;
  -moz-border-sizing: border-box;
  border-sizing: border-box;
}

.container {
  width: 350px;
  margin: 50px auto;
}
.container > ul {
  list-style: none;
  padding: 0;
  margin: 0 0 20px 0;
}

.title {
  font-family: 'Pacifico';
  font-weight: norma;
  font-size: 40px;
  text-align: center;
  line-height: 1.4;
  color: #2980B9;
}

.dropdown a {
  text-decoration: none;
}
.dropdown [data-toggle="dropdown"] {
  position: relative;
  display: block;
  color: white;
  background: #2980B9;
  -moz-box-shadow: 0 1px 0 #409ad5 inset, 0 -1px 0 #20638f inset;
  -webkit-box-shadow: 0 1px 0 #409ad5 inset, 0 -1px 0 #20638f inset;
  box-shadow: 0 1px 0 #409ad5 inset, 0 -1px 0 #20638f inset;
  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.3);
  padding: 10px;
}
.dropdown [data-toggle="dropdown"]:hover {
  background: #2c89c6;
}
.dropdown .icon-arrow {
  position: absolute;
  display: block;
  font-size: 0.7em;
  color: #fff;
  top: 14px;
  right: 10px;
}
.dropdown .icon-arrow.open {
  -moz-transform:rotate(-180deg);
  -ms-transform:rotate(-180deg);
  -webkit-transform: rotate(-180deg);
  transform: rotate(-180deg);
  -moz-transition: -moz-transform 0.6s;
  -o-transition: -o-transform 0.6s;
  -webkit-transition: -webkit-transform 0.6s;
  transition: transform 0.6s;
}
.dropdown .icon-arrow.close {
  -moz-transform:rotate(0deg);
  -ms-transform:rotate(0deg);
  -webkit-transform: rotate(0deg);
  transform: rotate(0deg);
  -moz-transition: -moz-transform 0.6s;
  -o-transition: -o-transform 0.6s;
  -webkit-transition: -webkit-transform 0.6s;
  transition: transform 0.6s;
}
.dropdown .icon-arrow:before {
  content: '\25BC';
}
.dropdown .dropdown-menu {
  max-height: 0;
  overflow: hidden;
  list-style: none;
  padding: 0;
  margin: 0;
}
.dropdown .dropdown-menu li {
  padding: 0;
}
.dropdown .dropdown-menu li a {
  display: block;
  color: #6f6f6f;
  background: #EEE;
  -moz-box-shadow: 0 1px 0 white inset, 0 -1px 0 #d5d5d5 inset;
  -webkit-box-shadow: 0 1px 0 white inset, 0 -1px 0 #d5d5d5 inset;
  box-shadow: 0 1px 0 white inset, 0 -1px 0 #d5d5d5 inset;
  text-shadow: 0 -1px 0 rgba(255, 255, 255, 0.3);
  padding: 10px 10px;
}
.dropdown .dropdown-menu li a:hover {
  background: #f6f6f6;
}
.dropdown .show, .dropdown .hide {
  -moz-transform-origin: 50% 0%;
  -ms-transform-origin: 50% 0%;
  -webkit-transform-origin: 50% 0%;
  transform-origin: 50% 0%;
}
.dropdown .show {
  display: block;
  max-height: 9999px;
  -moz-transform: scaleY(1);
  -ms-transform: scaleY(1);
  -webkit-transform: scaleY(1);
  transform: scaleY(1);
  animation: showAnimation 0.5s ease-in-out;
  -moz-animation: showAnimation 0.5s ease-in-out;
  -webkit-animation: showAnimation 0.5s ease-in-out;
  -moz-transition: max-height 1s ease-in-out;
  -o-transition: max-height 1s ease-in-out;
  -webkit-transition: max-height 1s ease-in-out;
  transition: max-height 1s ease-in-out;
}
.dropdown .hide {
  max-height: 0;
  -moz-transform: scaleY(0);
  -ms-transform: scaleY(0);
  -webkit-transform: scaleY(0);
  transform: scaleY(0);
  animation: hideAnimation 0.4s ease-out;
  -moz-animation: hideAnimation 0.4s ease-out;
  -webkit-animation: hideAnimation 0.4s ease-out;
  -moz-transition: max-height 0.6s ease-out;
  -o-transition: max-height 0.6s ease-out;
  -webkit-transition: max-height 0.6s ease-out;
  transition: max-height 0.6s ease-out;
}

@keyframes showAnimation {
  0% {
    -moz-transform: scaleY(0.1);
    -ms-transform: scaleY(0.1);
    -webkit-transform: scaleY(0.1);
    transform: scaleY(0.1);
  }
  40% {
    -moz-transform: scaleY(1.04);
    -ms-transform: scaleY(1.04);
    -webkit-transform: scaleY(1.04);
    transform: scaleY(1.04);
  }
  60% {
    -moz-transform: scaleY(0.98);
    -ms-transform: scaleY(0.98);
    -webkit-transform: scaleY(0.98);
    transform: scaleY(0.98);
  }
  80% {
    -moz-transform: scaleY(1.04);
    -ms-transform: scaleY(1.04);
    -webkit-transform: scaleY(1.04);
    transform: scaleY(1.04);
  }
  100% {
    -moz-transform: scaleY(0.98);
    -ms-transform: scaleY(0.98);
    -webkit-transform: scaleY(0.98);
    transform: scaleY(0.98);
  }
  80% {
    -moz-transform: scaleY(1.02);
    -ms-transform: scaleY(1.02);
    -webkit-transform: scaleY(1.02);
    transform: scaleY(1.02);
  }
  100% {
    -moz-transform: scaleY(1);
    -ms-transform: scaleY(1);
    -webkit-transform: scaleY(1);
    transform: scaleY(1);
  }
}
@-moz-keyframes showAnimation {
  0% {
    -moz-transform: scaleY(0.1);
    -ms-transform: scaleY(0.1);
    -webkit-transform: scaleY(0.1);
    transform: scaleY(0.1);
  }
  40% {
    -moz-transform: scaleY(1.04);
    -ms-transform: scaleY(1.04);
    -webkit-transform: scaleY(1.04);
    transform: scaleY(1.04);
  }
  60% {
    -moz-transform: scaleY(0.98);
    -ms-transform: scaleY(0.98);
    -webkit-transform: scaleY(0.98);
    transform: scaleY(0.98);
  }
  80% {
    -moz-transform: scaleY(1.04);
    -ms-transform: scaleY(1.04);
    -webkit-transform: scaleY(1.04);
    transform: scaleY(1.04);
  }
  100% {
    -moz-transform: scaleY(0.98);
    -ms-transform: scaleY(0.98);
    -webkit-transform: scaleY(0.98);
    transform: scaleY(0.98);
  }
  80% {
    -moz-transform: scaleY(1.02);
    -ms-transform: scaleY(1.02);
    -webkit-transform: scaleY(1.02);
    transform: scaleY(1.02);
  }
  100% {
    -moz-transform: scaleY(1);
    -ms-transform: scaleY(1);
    -webkit-transform: scaleY(1);
    transform: scaleY(1);
  }
}
@-webkit-keyframes showAnimation {
  0% {
    -moz-transform: scaleY(0.1);
    -ms-transform: scaleY(0.1);
    -webkit-transform: scaleY(0.1);
    transform: scaleY(0.1);
  }
  40% {
    -moz-transform: scaleY(1.04);
    -ms-transform: scaleY(1.04);
    -webkit-transform: scaleY(1.04);
    transform: scaleY(1.04);
  }
  60% {
    -moz-transform: scaleY(0.98);
    -ms-transform: scaleY(0.98);
    -webkit-transform: scaleY(0.98);
    transform: scaleY(0.98);
  }
  80% {
    -moz-transform: scaleY(1.04);
    -ms-transform: scaleY(1.04);
    -webkit-transform: scaleY(1.04);
    transform: scaleY(1.04);
  }
  100% {
    -moz-transform: scaleY(0.98);
    -ms-transform: scaleY(0.98);
    -webkit-transform: scaleY(0.98);
    transform: scaleY(0.98);
  }
  80% {
    -moz-transform: scaleY(1.02);
    -ms-transform: scaleY(1.02);
    -webkit-transform: scaleY(1.02);
    transform: scaleY(1.02);
  }
  100% {
    -moz-transform: scaleY(1);
    -ms-transform: scaleY(1);
    -webkit-transform: scaleY(1);
    transform: scaleY(1);
  }
}
@keyframes hideAnimation {
  0% {
    -moz-transform: scaleY(1);
    -ms-transform: scaleY(1);
    -webkit-transform: scaleY(1);
    transform: scaleY(1);
  }
  60% {
    -moz-transform: scaleY(0.98);
    -ms-transform: scaleY(0.98);
    -webkit-transform: scaleY(0.98);
    transform: scaleY(0.98);
  }
  80% {
    -moz-transform: scaleY(1.02);
    -ms-transform: scaleY(1.02);
    -webkit-transform: scaleY(1.02);
    transform: scaleY(1.02);
  }
  100% {
    -moz-transform: scaleY(0);
    -ms-transform: scaleY(0);
    -webkit-transform: scaleY(0);
    transform: scaleY(0);
  }
}
@-moz-keyframes hideAnimation {
  0% {
    -moz-transform: scaleY(1);
    -ms-transform: scaleY(1);
    -webkit-transform: scaleY(1);
    transform: scaleY(1);
  }
  60% {
    -moz-transform: scaleY(0.98);
    -ms-transform: scaleY(0.98);
    -webkit-transform: scaleY(0.98);
    transform: scaleY(0.98);
  }
  80% {
    -moz-transform: scaleY(1.02);
    -ms-transform: scaleY(1.02);
    -webkit-transform: scaleY(1.02);
    transform: scaleY(1.02);
  }
  100% {
    -moz-transform: scaleY(0);
    -ms-transform: scaleY(0);
    -webkit-transform: scaleY(0);
    transform: scaleY(0);
  }
}
@-webkit-keyframes hideAnimation {
  0% {
    -moz-transform: scaleY(1);
    -ms-transform: scaleY(1);
    -webkit-transform: scaleY(1);
    transform: scaleY(1);
  }
  60% {
    -moz-transform: scaleY(0.98);
    -ms-transform: scaleY(0.98);
    -webkit-transform: scaleY(0.98);
    transform: scaleY(0.98);
  }
  80% {
    -moz-transform: scaleY(1.02);
    -ms-transform: scaleY(1.02);
    -webkit-transform: scaleY(1.02);
    transform: scaleY(1.02);
  }
  100% {
    -moz-transform: scaleY(0);
    -ms-transform: scaleY(0);
    -webkit-transform: scaleY(0);
    transform: scaleY(0);
  }
}

js

// Dropdown Menu
var dropdown = document.querySelectorAll('.dropdown');
var dropdownArray = Array.prototype.slice.call(dropdown,0);
dropdownArray.forEach(function(el){
	var button = el.querySelector('a[data-toggle="dropdown"]'),
			menu = el.querySelector('.dropdown-menu'),
			arrow = button.querySelector('i.icon-arrow');

	button.onclick = function(event) {
		if(!menu.hasClass('show')) {
			menu.classList.add('show');
			menu.classList.remove('hide');
			arrow.classList.add('open');
			arrow.classList.remove('close');
			event.preventDefault();
		}
		else {
			menu.classList.remove('show');
			menu.classList.add('hide');
			arrow.classList.remove('open');
			arrow.classList.add('close');
			event.preventDefault();
		}
	};
})

Element.prototype.hasClass = function(className) {
    return this.className && new RegExp("(^|\\s)" + className + "(\\s|$)").test(this.className);
};

The above is the detailed content of the drop-down menu implemented by HTML+CSS3+JS. For more information about HTML+CSS3+JS drop-down menu, please pay attention to other related articles on 123WORDPRESS.COM!

<<:  Detailed explanation of html download function

>>:  Using shadowsocks to build a LAN transparent gateway

Recommend

Analyzing Linux high-performance network IO and Reactor model

Table of contents 1. Introduction to basic concep...

MySQL 8.0.15 installation and configuration graphic tutorial

This article records the installation and configu...

js to achieve floor scrolling effect

This article uses jQuery to implement the sliding...

How to change the root user's password in MySQL

Method 1: Use the SET PASSWORD command mysql> ...

HTML sub tag and sup tag

Today I will introduce two HTML tags that I don’t...

Detailed explanation of Linux commands sort, uniq, tr tools

Sort Tool The Linux sort command is used to sort ...

Analysis of two usages of the a tag in HTML post request

Two examples of the use of the a tag in HTML post...

Example of how to modify styles via CSS variables

question How to modify CSS pseudo-class style wit...

Detailed explanation of how a SQL statement is executed in MySQL

Overview I have recently started learning MySQL r...

How to underline the a tag and change the color before and after clicking

Copy code The code is as follows: a:link { font-s...

Summary of several commonly used CentOS7 images based on Docker

Table of contents 1 Install Docker 2 Configuring ...

Improvements to the web server to improve website performance

<br />In the first section of this series, w...

CSS transparent border background-clip magic

This article mainly introduces the wonderful use ...