單擊時使用“顯示：表格單元格”展開 div？

Question

我的頁面上有一系列組件：

• 我希望它們都至少有150px高。
• 如果它們不是150px高，我想將它們的文本垂直居中。
• 如果它們超過150px我想在150px處切斷文本，並在需要時使用顯示更多按鈕展開它。

現在，第一種情況，它們不是150px高，效果很好，文本居中。 問題是我無法讓height > 150px組件切斷它們的內容。

我試圖在沒有 jQuery 的情況下做到這一點。

這是一個演示該問題的代碼筆。

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，我發現您無法為顯示為表格單元格的元素設置最大高度

因此，我將文本包裹在div ，在那里設置所有max-height和overflow屬性，效果很好。

這是一個更新的代碼筆

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>

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;
    }

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

試試 css 風格的word-wrap:ellipsis 。 它會工作