vik*_*shi 3 css animation expand center
我有一个简单的代码,从中心水平和垂直扩展div,但它只扩展到左侧或底部,我希望它扩展到两侧(左= 50px,右= 50px)或(顶部= 50px,底部= 50px)来自中心,总数等于100px.这里的代码:
<!DOCTYPE html>
<html>
<head>
<style>
div {
background-color:#bca;
background: #fff;
position: absolute;
top: 50%;
left: 50%;
background-repeat: no-repeat;
background-position: center center;
border:1px solid green;
padding:10px;
}
</style>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<button id="go">» Run</button>
<div id="block">Hello!</div>
<script>
$("#go").click(function(){
$("#block").animate({
width: "100px",
height: "100px",
opacity: 0.6,
}, 1500 );
});
</script>
</body>
谢谢.
ang*_*ust 16
这个怎么样？
HTML
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<button id="go">» Run</button>
<div id="block">Hello!</div>
</body>
CSS
div {
background-color:#bca;
background: #fff;
position: absolute;
top: 0px;
left: 0px;
margin-left: 50%;
margin-top: 50%;
background-repeat: no-repeat;
background-position: center center;
border:1px solid green;
padding:10px;
}
jQuery的
$("#go").click(function(){
$("#block").animate({
width: "100px",
height: "100px",
top: "-50px",
left: "-50px",
opacity: 0.6,
}, 1500 );
});
http://jsfiddle.net/theguywholikeslinux/87f4Y/
我使用margin-left和margin-top进行居中,然后使用top:和left:值来使盒子长大,左右以及向下和向右.
如果你想让"Hello"保持在盒子的中心,你可能需要添加一些额外的CSS.