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原生JS仿苹果任务栏菜单，放大效果的菜单

时间：2021-07-01 10:21:17 帮助过：4人阅读

相信本菜单会让你学习到一些新鲜的JS技巧。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<title>JS仿苹果任务栏菜单</title> 
<style type="text/css"> 
body{margin:0;padding:0} 
#menu{position:absolute;width:100%;bottom:0;text-align:center;} 
</style> 
<script type="text/javascript"> 
window.onload = function () 
{ 
var oMenu = document.getElementById("menu"); 
var aImg = oMenu.getElementsByTagName("img"); 
var aWidth = []; 
var i = 0;

for (i = 0; i < aImg.length; i++) 
{ 
aWidth.push(aImg[i].offsetWidth); 
aImg[i].width = parseInt(aImg[i].offsetWidth / 2) 
}

document.onmousemove = function (event) 
{ 
var event = event || window.event; 
for (i = 0; i < aImg.length; i++) 
{ 
var a = event.clientX - aImg[i].offsetLeft - aImg[i].offsetWidth / 2; 
var b = event.clientY - aImg[i].offsetTop - oMenu.offsetTop - aImg[i].offsetHeight / 2; 
var iScale = 1 - Math.sqrt(a * a + b * b) / 300; 
if (iScale < 0.5) iScale = 0.5; 
aImg[i].width = aWidth[i] * iScale 
} 
}; 
}; 
</script> 
</head> 
<body> 
 
<img src="https://www.jb51.net/jscss/demoimg/201108/1.png" /> 
<img src="https://www.jb51.net/jscss/demoimg/201108/2.png" /> 
<img src="https://www.jb51.net/jscss/demoimg/201108/3.png" /> 
<img src="https://www.jb51.net/jscss/demoimg/201108/4.png" /> 
<img src="https://www.jb51.net/jscss/demoimg/201108/5.png" /> 
<img src="https://www.jb51.net/jscss/demoimg/201108/6.png" /> 
<img src="https://www.jb51.net/jscss/demoimg/201108/7.png" /> 
<img src="https://www.jb51.net/jscss/demoimg/201108/8.png" /> 
 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

原生JS仿苹果任务栏菜单，放大效果的菜单

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