javascript - 获取 flexbox 行的高度

Question

我有一个 flexbox 容器，其中每一行的元素都会溢出，然后转到下一行。每个元素都与基线对齐；因此，行可以有不同的大小，这取决于哪些元素在哪一行以及它们如何与基线对齐。

下图中的元素以基线为中心:

我想知道有没有办法动态获取行高？或者获取从每个元素的基线到行的顶部/底部的距离？

我想这样做，这样我就可以在元素周围设置一个悬停状态，允许悬停在元素上延伸，并让高度一直延伸到每一行的顶部，因此每个元素的悬停都会如下所示:

我的尝试: codepen

/* on hover i want this to be a box around the item, and to have the top and the bottom of the border be touching the top/bottom of the row it is on */
.flex-item:hover {
  border: 1px solid darkred;
}

/* so item doesn't move when not hovering */
.flex-item {
  border: 1px solid lightblue;
}

.flex-container {
  overflow: hidden;    position: relative;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: baseline;
  align-items: baseline;
  width: 400px;
  height: 350px;
  background-color: lightblue;
  flex-wrap: wrap;
  padding: 10px;
}

.inner-wrapper {
  display: inline-block;
  text-align: center;
  width: 100px;
  margin: 10px;
  background-color: cornflowerblue;
}

.flex-body {
  border-bottom: 1px solid #fff;
}
.flex-body-more {
  float: left;
  clear: left;
  width: 100%;
}
.flex-img {
  justify-content: center;
  align-items: center;
}

  <div class="flex-container">
    <div class="flex-item">
      <div class="inner-wrapper">
        <div class="flex-title">flex title1</div>
        <div class="flex-img">
          <img src='http://dummyimage.com/90x40/000/ffffff&text=hi'>
        </div>
        <div class="flex-body">center here</div>
        <div class="flex-body-more">more text</div>
      </div>
    </div>
    <div class="flex-item">
      <div class="inner-wrapper">
        <div class="flex-title">flex title1 longer title</div>
        <div class="flex-img">
          <img src='http://dummyimage.com/40x40/000/ffffff&text=hi'>
        </div>
        <div class="flex-body">center here</div>
        <div class="flex-body-more">more text</div>
      </div>
    </div>
    <div class="flex-item">
      <div class="inner-wrapper">
        <div class="flex-title">flex title1</div>
        <div class="flex-img">
          <img src='http://dummyimage.com/40x90/000/ffffff&text=hi'>
        </div>
        <div class="flex-body">center here</div>
        <div class="flex-body-more">more text more text more text</div>
      </div>
    </div>
    <div class="flex-item">
      <div class="inner-wrapper">
        <div class="flex-title">flex title1</div>
        <div class="flex-img">
          <img src='http://dummyimage.com/90x40/000/ffffff&text=hi'>
        </div>
        <div class="flex-body">center here</div>
        <div class="flex-body-more">more text</div>
      </div>
    </div>
    <div class="flex-item">
      <div class="inner-wrapper">
        <div class="flex-title">flex title1</div>
        <div class="flex-img">
          <img src='http://dummyimage.com/40x50/000/ffffff&text=hi'>
        </div>
        <div class="flex-body">center here</div>
        <div class="flex-body-more">more text</div>
      </div>
    </div>
  </div>

Answer 1

我可以通过更改

让悬停效果在所有元素上具有相同的高度

.flex-container {
    align-items: baseline
} 

到

.flex-container {
    align-items: strech
}

然后我添加了以下几行以使元素垂直对齐:

.flex-item {
    display: flex;
    align-items: center;
}

但是，您的原始代码将这些元素对齐为“基线”而不是“中心”。我不知道该怎么做。

希望这对您有所帮助。

代码笔:https://codepen.io/bottlecap/pen/pEgbNx