javascript - 如何给没有固定大小的 block 添加图片放大效果？

Question

我有流体网格:一行 3 个 block ，宽度:33.3%。此 block 中包含的图像具有 width: 100% 和 height: auto。我想在悬停时为此图像添加放大效果。但是我不知道如何在不改变 block 高度的情况下使用流体网格来做到这一点。你可以在下面看到我的代码片段。

有什么解决办法吗？

.split.third {
  width: 33.3%;
  display: block;
  float: left;
  overflow: hidden;
}
.split.third img {
  width: 100%;
  height: auto;
  -webkit-transition: all 1s ease;
  -moz-transition: all 1s ease;
  -o-transition: all 1s ease;
  -ms-transition: all 1s ease;
  transition: all 1s ease;
}
.split.third:hover img {
  width: 120%;
}

<div class="split-wrap">
  <div class="split third">
    <div class="cover">
      <img src="http://cs5-3.4pda.to/5290239.png" />
    </div>
  </div>

  <div class="split third">
    <div class="cover">
      <img src="http://cs5-3.4pda.to/5290239.png" />
    </div>
  </div>

  <div class="split third">
    <div class="cover">
      <img src="http://cs5-3.4pda.to/5290239.png" />
    </div>
  </div>
</div>

Answer 1

使用transform: scale(1.2)。

.split.third {
    width: 33.3%;
    display: block;
    float: left;
    overflow: hidden;
}
.split.third img {
    width: 100%;
    height: auto;
    -webkit-transition: -webkit-transform 1s ease;
            transition: -webkit-transform 1s ease;
            transition: transform 1s ease;
            transition: transform 1s ease, -webkit-transform 1s ease;
}
.split.third:hover img {
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
}

<div class="split-wrap">
  <div class="split third">
    <div class="cover">
      <img src="http://cs5-3.4pda.to/5290239.png">
    </div>
  </div>
  <div class="split third">
    <div class="cover">
      <img src="http://cs5-3.4pda.to/5290239.png">
    </div>
  </div>
  <div class="split third">
    <div class="cover">
      <img src="http://cs5-3.4pda.to/5290239.png">
    </div>
  </div>
</div>