Ripple Click Effect

http://thecodeplayer.com/walkthrough/ripple-click-effect-google-material-design

by Ayyappan Sakthivadivel

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<h1>Ripple Click Effect</h1>
<ul>
	<li><a>Dashboard</a></li>
	<li><a>My Account</a></li>
	<li><a>Direct Messages</a></li>
	<li><a>Chat Rooms</a></li>
	<li><a>Settings</a></li>
	<li><a>Logout</a></li>
</ul>
<a class="btn btn-primary">Ripple Button Test</a>
<input type="button" class="btn btn-primary" value="Ripple Button Test input btn" />

CSS

/*custom fonts - Bitter, Montserrat*/
@import url('http://fonts.googleapis.com/css?family=Montserrat|Bitter');
/*basic reset*/
* {margin: 0; padding: 0;}
body {
	background: url('http://thecodeplayer.com/u/m/b1.png') no-repeat center center fixed;
	background-size: cover;
}

h1 {
	font: normal 32px/32px Bitter; color: white;
	text-align: center; padding: 85px 100px;
}

.btn{
  background-color: #006a7a;
  overflow: hidden;
  -webkit-transform: rotate(0.000001deg);
}

/*nav styles*/
ul {
	background: white; border-top: 6px solid hsl(180, 40%, 60%);
	width: 200px; margin: 0 auto;
}
ul li {
	list-style-type: none;
	/*relative positioning for list items along with overflow hidden to contain the overflowing ripple*/
	position: relative;
	overflow: hidden;
}
ul li a {
	font: normal 14px/28px Montserrat; color: hsl(180, 40%, 40%);
	display: block; padding: 10px 15px;
	text-decoration: none;
	cursor: pointer; /*since the links are dummy without href values*/
	/*prevent text selection*/
	user-select: none;
	/*static positioned elements appear behind absolutely positioned siblings(.ink in this case) hence we will make the links relatively positioned to bring them above .ink*/
	position: relative;
}

/*.ink styles - the elements which will create the ripple effect. The size and position of these elements will be set by the JS code. Initially these elements will be scaled down to 0% and later animated to large fading circles on user click.*/
.ink {
	display: block; position: absolute;
	background: hsl(180, 40%, 80%);
	border-radius: 100%;
	transform: scale(0);
}

/*animation effect*/
.ink.animate {animation: ripple 0.65s linear;}

@keyframes ripple {
	/*scale the element to 250% to safely cover the entire link and fade it out*/
	100% {opacity: 0; transform: scale(2.5);}
}

JavaScript

var parent, ink, d, x, y;

$(".btn").click(function(e){
    
	parent = $(this).parent();
	//create .ink element if it doesn't exist
	if(parent.find(".ink").length === 0)
		parent.prepend("<span class='ink'></span>");
		
	ink = parent.find(".ink");

	//incase of quick double clicks stop the previous animation
	ink.removeClass("animate");
	
	//set size of .ink
	if(!ink.height() && !ink.width())
	{
		//use parent's width or height whichever is larger for the diameter to make a circle which can cover the entire element.
		d = Math.max(parent.outerWidth(), parent.outerHeight());
		ink.css({height: d, width: d});
	}
	
	//get click coordinates
	//logic = click coordinates relative to page - parent's position relative to page - half of self height/width to make it controllable from the center;
	x = e.pageX - parent.offset().left - ink.width()/2;
	y = e.pageY - parent.offset().top - ink.height()/2;
	
	//set the position and add class .animate
	ink.css({top: y+'px', left: x+'px'}).addClass("animate");
});