分享一个原生JS实现的飘浮关键词的效果，鼠标悬停可让关键词停止运动，点击关键词可跳转到对应的页面，效果如下：
实现的代码如下：
代码语言：javascript复制<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>原生JS实现飘浮关键词特效</title>
<style type="text/css">
* {
margin: 0px;
margin: 0px;
}
body {
background: #8a234e url(images/0.jpg) no-repeat center 0;
}
h1 {
text-align: center;
color: #fff;
font-size: 16px;
position: absolute;
top: 100px;
left: 50%;
width: 300px;
margin-left: -150px;
}
#div1 {
position: relative;
width: 500px;
height: 260px;
margin: 146px auto 0;
overflow: hidden;
}
#div1 a {
position: absolute;
color: #000;
text-decoration: none;
top: 260px;
display: block;
border: solid 1px #000;
background: #fff;
filter: alpha(opacity=30);
opacity: 0.3;
font-size: 14px;
padding: 3px 5px;
font-family: arial;
}
#div1 a:hover {
filter: alpha(opacity=00);
opacity: 1;
font-weight: bold;
font-size: 16px;
}
</style>
<script type="text/javascript">
window.onload = function () {
var oDiv = document.getElementById('div1');
var aA = document.getElementsByTagName('a');
var i = 0;
for (i = 0; i < aA.length; i ) {
aA[i].pause = 1;
aA[i].time = null;
initialize(aA[i]);
aA[i].onmouseover = function () {
this.pause = 0;
};
aA[i].onmouseout = function () {
this.pause = 1;
};
}
setInterval(starmove, 24);
function starmove() {
for (i = 0; i < aA.length; i ) {
if (aA[i].pause) {
domove(aA[i]);
}
}
}
function domove(obj) {
if (obj.offsetTop <= -obj.offsetHeight) {
obj.style.top = oDiv.offsetHeight "px";
initialize(obj);
} else {
obj.style.top = obj.offsetTop - obj.ispeed "px";
}
}
function initialize(obj) {
var iLeft = parseInt(Math.random() * oDiv.offsetWidth);
var scale = Math.random() * 1 1;
var iTimer = parseInt(Math.random() * 1500);
obj.pause = 0;
obj.style.fontSize = 12 * scale 'px';
if ((iLeft - obj.offsetWidth) > 0) {
obj.style.left = iLeft - obj.offsetWidth "px";
} else {
obj.style.left = iLeft "px";
}
clearTimeout(obj.time);
obj.time = setTimeout(function () {
obj.pause = 1;
}, iTimer);
obj.ispeed = Math.ceil(Math.random() * 4) 1;
}
};
</script>
</head>
<body>
<div id="div1">
<a target="_blank">课程</a>
<a target="_blank">教程</a>
<a target="_blank">试听</a>
<a target="_blank">精品</a>
<a target="_blank">视频</a>
<a target="_blank">特效</a>
</div>
</body>
</html>
