跟随眼睛转动的眼睛，很有趣的一个网页特效。
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<title>跟随鼠标转动的眼睛，codesocang.com收集。</title>
<style type="text/css">
.eye{
display:inline;
overflow:hidden;
position:relative;
float:left;
margin:50px 0 0 50px;
width:50px;
height:50px;
font-size:50px;
line-height:106%;
+line-height:normal;
cursor:default;
}
@media all and (min-width:0px){
.eye{line-height:normal;}
}
.pupil{
overflow:hidden;
position:absolute;
margin:-5px 0 0 -5px;
width:10px;
height:10px;
line-height:normal;
font-size:10px;
top:50%;
left:50%;
}
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<a href="<#ZC_BLOG_HOST#>">源码搜藏网</a>,站长必备的高质量网页特效和广告代码。codesocang.com，站长js特效。<hr>
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<div id="leftEye" class="eye">○<span id="leftPupil" class="pupil">●</span></div>
<div id="rightEye" class="eye">○<span id="rightPupil" class="pupil">●</span></div>
<input name="" id="xy" type="text" />
<script type="text/javascript">
var $ = function (o) { return document.getElementById(o) }
var leftEye = $("leftEye");
var rightEye = $("rightEye");
var leftPupil = $("leftPupil");
var rightPupil = $("rightPupil");
var xy = $("xy");
document.documentElement.onmousemove = function (e)
{
var e = window.event || e;
var eX = e.clientX, eY = e.clientY;
track(leftEye, leftPupil, eX, eY);
track(rightEye, rightPupil, eX, eY);
} //欢迎来到源码搜藏网，我们的网址是www.codesocang.com，很好记，zz站长，js就是js特效，本站收集大量高质量js代码，还有许多广告代码下载。
function track(o, i, eX, eY)
{
var oL = o.offsetLeft;
var oT = o.offsetTop;
var oW = o.offsetWidth;
var oH = o.offsetHeight;
var oCW = o.clientWidth;
var oCH = o.clientHeight;
var oX = oL + oW / 2;
var oY = oT + oH / 2;
var eX = eX - oX;
var eY = eY - oY;
var eXY, iL, iT;
if (eX != 0 && eY != 0)
{
eXY = eX / eY;
var r = oCW / 2 - 12;
var R = Math.sqrt(eX * eX + eY * eY);
var rR = R / 5 > r ? r : R / 5;
var iL = Math.sqrt(rR * rR / (1 + 1 / (eXY * eXY)));
if (eX < 0) iL = -iL;
var iT = iL / eXY;
i.style.left = (iL + oCW / 2) + "px";
i.style.top = (iT + oCH / 2) + "px";
}
xy.value = eX + "," + eY;
} //欢迎来到源码搜藏网，我们的网址是www.codesocang.com，很好记，zz站长，js就是js特效，本站收集大量高质量js代码，还有许多广告代码下载。
</script>
</body>
</html>
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