在 Edge 和 IE 上是否有动画 SVG(使用 CSS)的解决方法?

Is there a workaround for animated SVGs (using CSS) on Edge and IE?

我有一个 SVG 动画,它不能在 Edge 上运行,显然不能在 IE 上运行。我已经对这个问题进行了广泛的研究,并且知道为 stroke-dashoffsetstroke-dasharray 使用像素以使其工作。我做了同样的事情,但没有用。现在,据我所知,Edge 目前支持 SVG 动画;再一次,它对我不起作用。

我想知道是否有任何解决方法,比如在动画不工作时使用背景图像的方法?我搜索了很多,但找不到相关主题。任何想法将不胜感激。

@-webkit-keyframes handwriting {
  to {
    stroke-dashoffset: 0px;
  }
}

@-moz-keyframes handwriting {
  to {
    stroke-dashoffset: 0px;
  }
}

@keyframes handwriting {
  to {
    stroke-dashoffset: 0px;
  }
}

.svg-text {
  width: 23rem;
  height: 100%;
  margin-top: 1rem;
  margin-bottom: -2rem;
  fill: none;
  stroke: #000;
  stroke-miterlimit: 10;
  stroke-width: 7px;
  -webkit-filter: drop-shadow(3px 3px 2px rgba(0, 0, 0, 0.7));
  filter: drop-shadow(3px 3px 2px rgba(0, 0, 0, 0.7));
  z-index: 100;
}

.svg-text__animate {
  stroke-dasharray: 300px;
  stroke-dashoffset: 300px;
  animation: handwriting 0.8s linear forwards;
}

.svg-text--container .svg-text__animate {
  opacity: 1;
}

.svg-text--container .svg-text__animate--1 {
  -webkit-animation-delay: 0.8s;
  animation-delay: 0.8s;
}

.svg-text--container .svg-text__animate--2 {
  -webkit-animation-delay: 1.1s;
  animation-delay: 1.1s;
}

.svg-text--container .svg-text__animate--3 {
  -webkit-animation-delay: 1.3s;
  animation-delay: 1.3s;
}

.svg-text--container .svg-text__animate--4 {
  -webkit-animation-delay: 1.8s;
  animation-delay: 1.8s;
}

.svg-text--container .svg-text__animate--5 {
  -webkit-animation-delay: 2s;
  animation-delay: 2s;
}

.svg-text--container .svg-text__animate--6 {
  -webkit-animation-delay: 2.2s;
  animation-delay: 2.2s;
}

.svg-text--container .svg-text__animate--7 {
  -webkit-animation-delay: 2.4s;
  animation-delay: 2.4s;
}

.svg-text--container .svg-text__animate--8 {
  -webkit-animation-delay: 2.6s;
  animation-delay: 2.6s;
}

.svg-text--container .svg-text__animate--9 {
  -webkit-animation-delay: 2.9s;
  animation-delay: 2.9s;
}

.svg-text--container .svg-text__animate--10 {
  -webkit-animation-delay: 3.3s;
  animation-delay: 3.3s;
}

.svg-text--container .svg-text__animate--11 {
  -webkit-animation-delay: 3.5s;
  animation-delay: 3.5s;
}

.svg-text--container .svg-text__animate--12 {
  -webkit-animation-delay: 3.7s;
  animation-delay: 3.7s;
}

.svg-text--container .svg-text__animate--12 {
  -webkit-animation-delay: 4s;
  animation-delay: 4s;
}

.svg-text--container .svg-text__animate--13 {
  -webkit-animation-delay: 4.3s;
  animation-delay: 4.3s;
}

.svg-text--container .svg-text__animate--14 {
  -webkit-animation-delay: 4.6s;
  animation-delay: 4.6s;
}
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问题似乎是因为 IE 不支持 SVG animation

我认为最简单的解决方法是在 IE 中使用 gif。我制作了动画的 gif 并使用 this tool. The outcome gif is like this 将其循环计数为一次。我们可以使用 IE 特定的 css 规则来显示 gif 并在 IE 中隐藏其他部分:

@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
   /* IE10+ CSS */
    #gif-img{
        display:block;
    }
    .banner__1__content--l2 svg-text--container {
        display: none;
    }
}
<div id="gif-img">
    <img src="https://i.stack.imgur.com/jrK6Y.gif" />
</div>
<div class="banner__1__content--l2 svg-text--container">
    ...
</div>

在 Edge 中,我发现如果我们将 stroke-width 的值设置得足够大,动画就会起作用。但是结果还是和Chrome和the New Edge Chromium有点不同(你可以尝试更新到最新的Edge Chromium官方构建):

@supports (-ms-ime-align: auto) {
    /* Edge 16+ CSS */
    .svg-text {
        stroke-width: 700px;
    }
}