效果体验：http://hovertree.com/texiao/jquery/37/
代码如下：
<!doctype html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>jQuery和CSS3炫酷按钮点击波特效 - 何问起</title><base target="_blank" /> <!--主要样式-->
<style type="text/css">
* {
margin: 0;
padding: 0;
}
/*hovertreenav styles*/
.hovertreenav ul {
background: white;
border-top: 6px solid hsl(180, 40%, 60%);
width: 200px;
margin: 5em auto;
} .hovertreenav ul li {
list-style-type: none;
/*relative positioning for list items along with overflow hidden to contain the overflowing ripple*/
position: relative;
overflow: hidden;
} .hovertreenav 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.*/
.hovertreenav .ink {
display: block;
position: absolute;
background: hsl(180, 40%, 80%);
border-radius: 100%;
transform: scale(0);
}
/*animation effect*/
.hovertreenav .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);
}
}
</style> <!--[if IE]>
<script src="http://hovertree.com/texiao/html5/4/html5shiv.min.js"></script>
<![endif]--> </head>
<body style="background:#D1EFFE;"> <div class="hovertreenav">
<ul>
<li><a href="http://hovertree.com">何问起</a></li>
<li><a href="http://hovertree.com/menu/bootstrap/">Bootstrap</a></li>
<li><a href="http://hovertree.com/menu/jquery/">jQuery</a></li>
<li><a href="http://hovertree.com/menu/webfront/">web前端</a></li>
<li><a href="http://hovertree.com/h/bjaf/kqud99m6.htm">CSS3动画</a></li>
<li><a href="http://hovertree.com/h/bjaf/mcpnogp6.htm">HTML5红包</a></li>
<li><a>点我有水波</a></li>
</ul>
</div> <script type="text/javascript" src="http://hovertree.com/ziyuan/jquery/jquery-1.12.1.min.js"></script>
<script type="text/javascript">
//jQuery time
var parent, ink, d, x, y;
$(".hover"+"treenav ul li a").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");
})
</script> </body>
</html>