主要利用CSS3-animation + JS实现效果,只是提供思路,具体细节可以参考
实现效果:
css3-animation属性,可实现动画效果,如下:
- .demo{
- animation: 动画1,动画2;
- }
上面可以实现动画效果,但是不可控制,只能自动播放,于是乎看下面:
- // 灵动岛对应dom
- const box = document.querySelector(".demo");
- // 以类名定义所有动画类型,以类名切换,实现动画切换
- const animationList = ["longer", "divide", "fusion", "bigger"];
- box.addEventListener("click", () => {
- box.classList.add(animationList[index]);
- });
- let index = 0;
- // 每一个动画结束都会触发此事件(包括子元素及不同属性动画结束时)
- box.addEventListener("animationend", (e) => {
- if (
- e.animationName === "divide-right" ||
- e.animationName === "fusion-right"
- ) {
- return;
- }
- index++;
- setTimeout(() => {
- if (index <= animationList.length - 1) {
- box.classList.add(animationList[index]);
- } else {
- index = 0;
- }
- }, 800);
- });
JS控制动画的三种方式:
1.直接覆盖 animation
- box.style.animation = `longer 800ms ease-in-out`;
如果动画效果较多,那就写的比较长了,建议封装CSS类,通过切换CSS类名实现动画效果
2.通过切换CSS类名,上面说过了,把不同动画封装在不同类里面,直接切换
- box.classList.toggle('longer');
3.animationPlayState属性
- box.style.animationPlayState="paused"
- // runing播放,paused暂停。
但是只支持单动画播放
动画结束如何让界面停留在结束时的状态呢?
- animation-fill-mode:forwards;
完整代码:
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8" />
- <meta http-equiv="X-UA-Compatible" content="IE=edge" />
- <title>灵动岛</title>
- <style>
- * {
- margin: 0;
- padding: 0;
- }
- #iphone14pro {
- position: relative;
- margin: auto;
- width: 974px;
- height: 876px;
- overflow: hidden;
- background-image: url(https://www.cdsy.xyz/wp-content/uploads/2022/09/2022091405393859.png);
- }
- .demo {
- width: 320px;
- margin-top: 72px;
- margin: 72px auto 0;
- background-color: red;
- height: 80px;
- border-radius: 40px;
- background-color: #272729;
- position: relative;
- }
- .demo::after {
- position: absolute;
- content: " ";
- right: 0;
- width: 80px;
- height: 100%;
- border-radius: 80px;
- background-color: #272729;
- }
- /* 变长 */
- .longer {
- animation: longer 800ms ease-in-out forwards;
- }
- @keyframes longer {
- 0% {
- }
- 60% {
- width: 50vw;
- }
- 80% {
- transform: scaleX(1.04);
- }
- 100% {
- transform: scaleX(1);
- width: 50vw;
- }
- }
- /* 分离 */
- .divide {
- animation: divide-left 800ms ease-in-out forwards;
- }
- @keyframes divide-left {
- 0% {
- }
- 40% {
- transform: scaleX(1.1);
- }
-
- 100% {
- transform: scaleX(1);
- }
- }
- .divide::after {
- animation: divide-right 800ms ease-in-out forwards;
- }
- @keyframes divide-right {
- 0% {
- }
- 40% {
- transform: scaleX(1.1);
- }
-
- 100% {
- transform: scaleX(1);
- right: -100px;
- }
- }
- /* 融合 */
- .fusion {
- animation: fusion-left 800ms ease-in-out forwards;
- }
- @keyframes fusion-left {
- 0% {
- }
- 40% {
- transform: scaleX(1.1);
- }
-
- 100% {
- transform: scaleX(1);
- }
- }
- .fusion::after {
- animation: fusion-right 800ms ease-in-out forwards;
- }
- @keyframes fusion-right {
- 0% {
- right: -100px;
- }
- 40% {
- transform: scaleX(1.1);
- }
-
- 100% {
- transform: scaleX(1);
- right: 0;
- }
- }
- /* 变大 */
- .bigger {
- animation: bigger 800ms ease-in-out forwards;
- }
- @keyframes bigger {
- 0% {
- }
- 60% {
- width: 81vw;
- height: 400px;
- border-radius: 100px;
- }
- 80% {
- transform: scaleX(1.04);
- }
- 100% {
- width: 81vw;
- height: 400px;
- border-radius: 100px;
- transform: scaleX(1);
- }
- }
- .bigger::after {
- display: none;
- }
- </style>
- </head>
- <body>
- <div id="iphone14pro">
- <div class="demo"></div>
- </div>
- <script>
- // 灵动岛对应dom
- const box = document.querySelector(".demo");
-
- const animationList = ["longer", "divide", "fusion", "bigger"];
- box.addEventListener("click", () => {
- box.classList.add(animationList[index]);
- });
- let index = 0;
- // 每一个动画结束都会触发此事件(包括子元素及不同种类属性动画)
- box.addEventListener("animationend", (e) => {
- if (
- e.animationName === "divide-right" ||
- e.animationName === "fusion-right"
- ) {
- return;
- }
- index++;
- setTimeout(() => {
- if (index <= animationList.length - 1) {
- box.classList.add(animationList[index]);
- } else {
- index = 0;
- }
- }, 800);
- });
- </script>
- </body>
- </html>