【功能】如何实现卡牌翻转功能

主要使用css3实现卡片翻转效果，关键知识点有：

1、transform: rotateY(0deg/180deg) Y轴旋转

2、transition: name time mode 动画渐变

3、backface-visibility: hidden 图层背面隐藏

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>卡片翻转功能</title>
    <style>
        html,
        body {
            padding: 0px;
            margin: 0px;
            background-color: #1bafd2;
        }

        .box {
            position: relative;
            margin: 200px auto 0;
            width: 80px;
            height: 80px;
            border-radius: 10px;
            overflow: hidden;
        }

        .front {
            position: absolute;
            top: 0;
            left: 0;
            z-index: 12;
            width: 100%;
            height: 100%;
            border-radius: 10px;
            background-color: #2EC7E4;
            backface-visibility: hidden; /*让背面图案隐藏*/
            transform: rotateY(0deg);
            transition: all 0.3s ease;
        }

        .back {
            position: absolute;
            top: 0;
            left: 0;
            z-index: 10;
            width: 100%;
            height: 100%;
            border-radius: 10px;
            background-image: url('http://satyr.io/80x80?flag=cze');
            background-size: contain;
            backface-visibility: hidden;
            transform: rotateY(-180deg);
            transition: all 0.3s ease;
        }

        .box.flip .front {
            z-index: 10;
            transform: rotateY(180deg);
        }

        .box.flip .back {
            z-index: 12;
            transform: rotateY(0deg);
        }
    </style>
</head>

<body>
    <div class="box">
        <div class="front"></div>
        <div class="back"></div>
    </div>
    <script>
        let box = document.getElementsByClassName('box')[0],
            key = 0;
        box.onclick = function () {
            if (key) {
                this.className = 'box';
                key = 0;
            } else {
                this.className = 'box flip';
                key = 1;
            }
        }
    </script>
</body>

</html>

 

【参考文章】

CSS3 Page Flips

 

posted @ 2020-03-11 15:57  WANNANANANA  阅读(649)  评论(0)  编辑  收藏  举报