css3讓div隨鼠標移動而抖動起來

2024-07-11 08:27:48

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來源：轉載

供稿：網友

最近發現一個網站，感覺用戶體驗不錯，特別是一些背景圖片隨著鼠標的移動的反向的移動，感覺跟不錯，于是就試著寫了個小demo模仿一下

復制代碼

代碼如下:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<style type="text/css">
.layer {
width:400px;
height:400px;
background-color:#FF7373;
transa
}
.A {
position: absolute;
top: 23px;
left: 10px;
}
.B {
position: absolute;
top: 223px;
left: 516px;
}
.C {
position: absolute;
top: 384px;
left: 1000px;
}
</style>
</head>
<body>
<div class="layer A"></div>
<div class="layer B"></div>
<div class="layer C"></div>
</body>
<script type="text/javascript">
var items = document.getElementsByClassName("layer");
document.addEventListener('mousemove', function (evt){
var x = evt.clientX;
var y = evt.clientY;
//console.log(x);
var winWidth = window.innerWidth;
var winHeight = window.innerHeight;
var halfWidth = winWidth / 2;
var halfHeight = winHeight / 2;
var rx = x - halfWidth;
var ry = halfHeight - y;
var length = items.length;
var max = 30;
for (var i = 0 ; i < length ; i++) {
var dx = (items[i].getBoundingClientRect().width/max)*(rx / -halfWidth);
var dy = (items[i].getBoundingClientRect().height/max)*(ry / halfHeight);
items[i].style['transform'] = items[i].style['-webkit-transform'] = 'translate('+dx+'px,'+dy+'px)';
}
}, false);
</script>
</html>

說明一下分別拿到每個div的長度和寬度，通過比例算出相對于窗口的合適的偏移量，max是每個div左右偏移最多不超過的值

效果展示