animate点击按钮变大并以元素中心向外变大

程序员文章站 2022-03-16 18:58:16
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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .box{
            width:100px;
            height:100px;
            margin:200px 200px;
            border-radius:10px;
            box-shadow: 0 0 20px #999;
            line-height: 300px;
            text-align: center;
            font-size: 50px;
            color:#fff;
        }
        #box1{
            background:#5298c7;
        }
    </style>
</head>
<body>
<div id="box1" class="box"></div>
<script src="../js/jquery-1.12.4.js"></script>
<script>
    $('#box1').click(function () {
        var $this=$(this);
        $this.css({
            position:'absolute',
            //获得当前已定位元素的top值
            top:$this.position().top,
            left:$this.position().left
        })
            .animate({
                //获得当前元素的宽度并*2
                width:$this.width()*2,
                height:$this.height()*2,
                top:$this.position().top-$this.height(),
                left:$this.position().left-$this.width()
        },500)
    })
</script>
</body>
</html>