61

我试图用谷歌搜索并从这个论坛中寻找我的问题的解决方案，但到目前为止还没有运气。我想通过单击图片暂停我的 CSS3 动画（图像幻灯片放映），并通过单击图片恢复到相同的动画。

我知道如何暂停幻灯片放映，我也可以恢复一次，但是如果尝试暂停和恢复不止一次，它就会停止工作。这是我的代码的样子：

<!DOCTYPE html>
<html>

<head>
<title></title>
<style type="text/css">
.pic {
    position: absolute;
    opacity: 0;
}

#pic1 {
    -webkit-animation: pic1 4s infinite linear;
}

#pic2 {
    -webkit-animation: pic2 4s infinite linear;
}

@-webkit-keyframes pic1 {
    0%   {opacity: 0;}
    5%   {opacity: 1;}
    45%  {opacity: 1;}
    50%  {opacity: 0;}
    100% {opacity: 0;}
}

@-webkit-keyframes pic2 {
    0%   {opacity: 0;}
    50%  {opacity: 0;}
    55%  {opacity: 1;}
    95%  {opacity: 1;}
    100% {opacity: 0;}
}
</style>

<script type="text/javascript">
function doStuff(){
    var pic1 = document.getElementById("pic1");
    var pic2 = document.getElementById("pic2");

    pic1.style.webkitAnimationPlayState="paused";
    pic2.style.webkitAnimationPlayState="paused";

    pic1.onclick = function(){
        pic1.style.webkitAnimationPlayState="running";
        pic2.style.webkitAnimationPlayState="running";
    }

    pic2.onclick = function(){
        pic1.style.webkitAnimationPlayState="running";
        pic2.style.webkitAnimationPlayState="running";
    }
}
</script>
</head>  

<body>
    <img id="pic1" class="pic" src="photo1.jpg" />
    <img id="pic2" class="pic" src="photo2.jpg" onclick="doStuff()" />
</body>                                                                

</html>

我不想使用任何 JS 库（例如 jQuery）或任何其他外部解决方案。

我的猜测是我的函数内部doStuff的函数仍在运行，这就是为什么pause并且resume只工作一次。

有没有办法在我点击一次后清除这些功能？还是我试图以完全错误的方式做到这一点？帮助表示赞赏。:)

4

5 回答 5

170

我发现使用 css 类更容易做到这一点。有了它，您可以为每个浏览器使用前缀。

.paused{
    -webkit-animation-play-state:paused;
    -moz-animation-play-state:paused;
    -o-animation-play-state:paused; 
    animation-play-state:paused;
}

然后您只需将此类添加或删除到您的动画元素中即可暂停/恢复动画。

于 2012-10-09T09:27:33.057 回答
37

这是使用javascript的解决方案：

var imgs = document.querySelectorAll('.pic');

for (var i = 0; i < imgs.length; i++) {
  imgs[i].onclick = toggleAnimation;
  imgs[i].style.webkitAnimationPlayState = 'running';
}

function toggleAnimation() {
  var style;
  for (var i = 0; i < imgs.length; i++) {
    style = imgs[i].style;
    if (style.webkitAnimationPlayState === 'running') {
      style.webkitAnimationPlayState = 'paused';
      document.body.className = 'paused';
    } else {
      style.webkitAnimationPlayState = 'running';
      document.body.className = '';
    }
  }
}
.pic {
  position: absolute;
  opacity: 0;
}

#pic1 {
  -webkit-animation: pic1 4s infinite linear;
}

#pic2 {
  -webkit-animation: pic2 4s infinite linear;
}

@-webkit-keyframes pic1 {
  0% {
    opacity: 0;
  }
  5% {
    opacity: 1;
  }
  45% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}

@-webkit-keyframes pic2 {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 0;
  }
  55% {
    opacity: 1;
  }
  95% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

.paused {
  background-color: #ddd;
}
<img id="pic1" class="pic" src="http://placehold.it/200x200/ff0000/ffffff">
<img id="pic2" class="pic" src="http://placehold.it/200x200/ff00ff/ffffff">

jQuery 解决方案（更短更易读）：

var imgs = $('.pic'),
  playState = '-webkit-animation-play-state';

imgs.click(function() {
  imgs.css(playState, function(i, v) {
    return v === 'paused' ? 'running' : 'paused';
  });
  $('body').toggleClass('paused', $(this).css(playState) === 'paused');
});
.pic {
  position: absolute;
  opacity: 0;
}

#pic1 {
  -webkit-animation: pic1 4s infinite linear;
}

#pic2 {
  -webkit-animation: pic2 4s infinite linear;
}

@-webkit-keyframes pic1 {
  0% {
    opacity: 0;
  }
  5% {
    opacity: 1;
  }
  45% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}

@-webkit-keyframes pic2 {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 0;
  }
  55% {
    opacity: 1;
  }
  95% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

.paused {
  background-color: #ddd;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<img id="pic1" class="pic" src="http://placehold.it/200x200/ff0000/ffffff">
<img id="pic2" class="pic" src="http://placehold.it/200x200/ff00ff/ffffff">

于 2011-04-27T13:16:34.463 回答
10

这是为了扩展 Luis Hijarrubia 给出的答案

.pause {
   -webkit-animation-play-state: paused !important; 
   -moz-animation-play-state: paused !important; 
   -o-animation-play-state: paused !important;
    animation-play-state: paused !important;
}

在我的页面中，我触发了父元素的类更改。我想做的就是旋转里面的图像。但似乎因为我没有使用悬停，所以暂停类的添加对动画状态没有影响。

!important 的使用确保这些值被新添加的 CSS 值覆盖。

于 2014-07-17T05:41:45.580 回答
1 
var e = document.getElementsById("Your_Id");


e.addEventListener("animationstart", listener, false);
e.addEventListener("animationend", listener, false);
e.addEventListener("animationiteration", listener, false);


function listener(e) {  alert("Your POSITION parameter:" + .target.style.position);
  switch(e.type) {
    case "animationstart":
      d = "Started: elapsed time is " + e.elapsedTime;
      break;
    case "animationend":
      d = "Ended: elapsed time is " + e.elapsedTime;
      break;
    case "animationiteration":
      d= "New loop started at time " + e.elapsedTime;  alert("pausing for 1 seconddddddd!!!!!!!"); e.target.style.animationPlayState = "paused";        window.setTimeout(function(){e.target.style.animationPlayState = "running";}, 1000);
      break;
  }
}
于 2015-07-20T08:20:03.213 回答
-1

我还没有测试过，但也许是这样的？

<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
.pic {   position: absolute;opacity: 0;  }
.pic1 {  -webkit-animation: pic1 4s infinite linear;   }
.pic2 {  -webkit-animation: pic2 4s infinite linear;   }
@-webkit-keyframes pic1 {  0%   {opacity: 0;}
                           5%   {opacity: 1;}
                           45%  {opacity: 1;}
                           50%  {opacity: 0;}
                           100% {opacity: 0;}    }
@-webkit-keyframes pic2 {  0%   {opacity: 0;}
                           50%  {opacity: 0;}
                           55%  {opacity: 1;}
                           95%  {opacity: 1;}
                           100% {opacity: 0;}    }
</style>
<script type="text/javascript">
function doStuff(){
    var pic1 = document.getElementById("pic1");
    var pic2 = document.getElementById("pic2");

    pic1.className="pic paused";
    pic2.className="pic paused";

    pic1.onclick = function(){
       pic1.className="pic pic1";
       pic2.className="pic pic2";
    }
    pic2.onclick = function(){
       pic1.className="pic pic1";
       pic2.className="pic pic2";
    }
}
</script>
</head>  
<body>
    <img id="pic1" class="pic pic1" src="photo1.jpg" />
    <img id="pic2" class="pic pic2" src="photo2.jpg" onclick="doStuff()" />
</body>                                                                 
</html>
于 2014-04-15T19:27:53.403 回答