为什么js中rotate只执行一次

突然想起之前学rotate时写的3d魔方，写的a:hover让它旋转的，但换成js的时候，加了定时器却发现rotate只能旋转一次，没办法达到一直旋转的效果，查了资料也还不是很明白。

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

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body {
            perspective: 800px;
        }

        .box {
            position: relative;
            margin: 200px auto;
            width: 200px;
            height: 200px;
            transform-style: preserve-3d;
            transition: all 1s linear;
            animation: rotate 1s linear infinite;
        }

        /* @keyframes rotate {
            100% {
                transform: rotate3d(1, 1, 1, 360deg);
            }
        } */

        .front,
        .back,
        .left,
        .right,
        .top,
        .bottom {
            position: absolute;
            width: 100%;
            height: 100%;
        }

        .front {
            background-color: rebeccapurple;
            transform: translateZ(100px);
        }

        .back {
            background-color: skyblue;
            transform: translateZ(-100px) rotateX(180deg);
        }

        .bottom {
            background-color: greenyellow;
            transform: translateY(100px) rotateX(-90deg);
        }

        .top {
            background-color: coral;
            transform: translateY(-100px) rotateX(90deg);
        }

        .left {
            background-color: pink;
            transform: translateX(-100px) rotateY(-90deg);
        }

        .right {
            background-color: yellow;
            transform: translateX(100px) rotateY(90deg);
        }

        /* .box:hover {
            transform: rotate3d(1, 1, 1, 360deg)
        } */
    </style>
</head>

<body>
    <div class="box">
        <div class="front"></div>
        <div class="back"></div>
        <div class="top"></div>
        <div class="bottom"></div>
        <div class="left"></div>
        <div class="right"></div>
    </div>

    <script>
        var box = document.querySelector('.box');

        var timer = setInterval(function () {
            box.click();
        }, 1200);

        box.addEventListener('click', function () {
            this.style.transform = "rotate3d(1, 1, 1, 360deg)";
        });
    </script>
</body>

</html>

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2条回答默认最新

CSDN专家-天际的海浪 2022-02-21 23:22

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transition:过度动画需要有属性变化才行
你第一次设置属性 this.style.transform = "rotate3d(1, 1, 1, 360deg)"; 可以有动画
但第二次设置属性 this.style.transform = "rotate3d(1, 1, 1, 360deg)"; 时这个属性之前已经是rotate3d(1, 1, 1, 360deg)了,等于没有属性变化,就不会有过度动画

你需要让transform 属性交替的 "rotate3d(1, 1, 1, 360deg)"和"rotate3d(1, 1, 1, 0deg)"变化

你题目的解答代码如下：

<!DOCTYPE html>
<html lang="en">
 
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body {
            perspective: 800px;
        }
 
        .box {
            position: relative;
            margin: 200px auto;
            width: 200px;
            height: 200px;
            transform-style: preserve-3d;
            transition: all 1s linear;
            animation: rotate 1s linear infinite;
        }
 
        /* @keyframes rotate {
            100% {
                transform: rotate3d(1, 1, 1, 360deg);
            }
        } */
 
        .front,
        .back,
        .left,
        .right,
        .top,
        .bottom {
            position: absolute;
            width: 100%;
            height: 100%;
        }
 
        .front {
            background-color: rebeccapurple;
            transform: translateZ(100px);
        }
 
        .back {
            background-color: skyblue;
            transform: translateZ(-100px) rotateX(180deg);
        }
 
        .bottom {
            background-color: greenyellow;
            transform: translateY(100px) rotateX(-90deg);
        }
 
        .top {
            background-color: coral;
            transform: translateY(-100px) rotateX(90deg);
        }
 
        .left {
            background-color: pink;
            transform: translateX(-100px) rotateY(-90deg);
        }
 
        .right {
            background-color: yellow;
            transform: translateX(100px) rotateY(90deg);
        }
 
        /* .box:hover {
            transform: rotate3d(1, 1, 1, 360deg)
        } */
    </style>
</head>
 
<body>
    <div class="box">
        <div class="front"></div>
        <div class="back"></div>
        <div class="top"></div>
        <div class="bottom"></div>
        <div class="left"></div>
        <div class="right"></div>
    </div>
 
    <script>
        var box = document.querySelector('.box');
 
        var timer = setInterval(function () {
            box.click();
        }, 1200);
        var f = true;
        box.addEventListener('click', function () {
            if (f) {
                   this.style.transform = "rotate3d(1, 1, 1, 360deg)";
            } else {
                   this.style.transform = "rotate3d(1, 1, 1, 0deg)";
            }
            f = !f;
        });
    </script>
</body>
 
</html>