Question

我的页面上有一系列组件：

我希望他们都至少150px高。
如果他们不是150px身高，我想垂直居中他们的文字。
如果他们超过150px，我想在150px切断文字如果需要，可以使用显示更多按钮展开它。

现在，第一种情况，他们不是150px高，工作正常，文本居中。问题是我无法获得height > 150px的组件来切断其内容。

我试图在没有jQuery的情况下这样做。

Here is a codepen demonstrating the issue.

HTML：

  <div class="containerDiv">
<div id="content1" class="contentDiv">
  Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
  <br />
  <button class="showMoreButton" onclick="showMore()">Show More</button>
</div>
</div>
<br />
<div class="containerDiv">
  <div id="content2" class="contentDiv">
  Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
  <br />
    <button class="showMoreButton" onclick="showMore()">Show More</button>
  </div>
  <br />
</div>

CSS：

.containerDiv {
  display: table;
  min-height: 150px;
  width: 400px;
}
.contentDiv {
  display: table-cell;
  max-height: 150px;
  overflow: hidden;
  vertical-align: middle;
}
.showMoreButton {
  display: none;
}

JS：

var contentDivs = document.getElementsByClassName("contentDiv");
for(var i = 0; i < contentDivs.length; i++) {
  if(contentDivs[i].offsetHeight > 150) {
    contentDivs[i].getElementsByTagName("button")[0].style.display = "inline-block";
  }
}

function showMore() {
  console.log(event.path[1].id);
  document.getElementById(event.path[1].id).style.maxHeight = "none";
}

Answer 1

好的，我发现你是can't set a max-height for an element displayed as a table cell

所以，我将文字包装在div内，在那里设置了所有max-height和overflow属性，效果很好。

Here is an updated codepen

<强> HTML：

  <div class="containerDiv">
<div id="content1" class="contentDiv">
  <div class="content">
    Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
    <button class="showMoreButton" onclick="showMore()">Show More</button>
  </div>
  <br />

</div>
</div>
<br />
<div class="containerDiv">
  <div id="content2" class="contentDiv">
    <div class="content">
    Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
  </div>
  <br />
  <button class="showMoreButton" onclick="showMore()">Show More</button>
</div>
<br />
</div>

<强> CSS：

    .containerDiv {
      display: table;
      min-height: 150px;
      overflow: hidden;
      width: 400px;
    }
    .contentDiv {
      display: table-cell;
      vertical-align: middle;
    }
    .content {
      max-height: 150px;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .showMoreButton {
      display: none;
    }

<强> JS：

var contentDivs = document.getElementsByClassName("contentDiv");
for(var i = 0; i < contentDivs.length; i++) {
  if(contentDivs[i].offsetHeight > 150) {
    contentDivs[i].getElementsByTagName("button")[0].style.display = "inline-block";
  }
}

function showMore() {  
 document.getElementById(event.path[1].id).getElementsByClassName("content")[0].style.maxHeight = "none";
}

Answer 2

尝试使用css样式word-wrap:ellipsis。它会起作用

使用＆＃34; display：table-cell＆＃34;展开div点击？

2 个答案: