Question

许多问题已被问及有关类似主题的答案，但我无法在任何地方找到这个问题的确切答案。另外，鉴于它是2018年，我想知道是否有任何新的方法可以实现我所寻找的目标。

基本上，我的<div>内容超出了高度，因此需要滚动。其中<div>是一个等待或加载模式，在下载新数据时覆盖它。它工作正常，除非用户向下滚动，并且绝对定位的div（100％）固定在内容的顶部。

我尝试使用top和bottom以及父母和孩子的多个position和display变体，但没有运气。

以下是包含所有相关代码的jsfiddle：https://jsfiddle.net/wmu7ghmm/2/。

有什么想法吗？

Answer 1

只需让用户滚动到顶部即可。

<强> HTML

<div class="container" id="container">
 <div id="wait-modal" class="waiting" style="display:none"></div>

  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  <p>This is a bunch of text, over and over again.<p>
  </div>

 <br>

 <button onclick="document.getElementById('wait-modal').style.display='block';document.getElementById('container').classList.add('no-scroll');document.getElementById('container').scrollTo({top:0})">
   Load Data
 </button>

<强> CSS

.container {
  width:300px;
  height:300px;
  max-height:300px;  
  overflow-y:scroll;
  background-color:#dedede;
  position:relative;
}
.container.no-scroll {
  overflow: hidden;
}

.waiting {
  position:absolute;
  height:100%;
  width:100%;
  color:white;
  text-align:center;
  padding-top:20px;

  background-color:rgba(0,0,0,0.5);
  transition:background-color 250ms ease;


}

.waiting:hover {
  background-color:rgba(0,0,0,0.35);
  transition:background-color 250ms ease;
}
.waiting:after {
  content:'PLEASE WAIT...';
  font-size:30px;
}

Answer 2

将其从容器中取出并将其绝对放置在容器上，其尺寸与容器完全相同。

.waiting {
  position:absolute;
  z-index:10;
  width:300px;
  height:300px;
  max-height:300px;  
  color:white;
  text-align:center;
  padding-top:20px;

  background-color:rgba(0,0,0,0.5);
  transition:background-color 250ms ease; 
}

https://jsfiddle.net/wmu7ghmm/4/

将绝对定位的div展开并定位到相对定位的父

2 个答案: