将div分成两部分,并在固定div下方显示一半,在上方显示一半

Question

我在页面中间有一个固定的div.我有另一个div包含一个图像库.目前,图像按预期滚动"固定div"下方.但我想要的是一个效果,图像永远不会隐藏在固定的div下面.它们不会分散,而是会分裂,部分图像显示在下方,部分位于上方.基本上我打算将一个div(带图像库的那个)分成两部分,部分显示在固定div下方和上面部分.这是一些花哨的图形,以更好地说明我希望做的事情.

我很高兴使用所需的任何css/html/javascript组合.

可能吗？

  Current Behavior           Desired Behavior
|===================|     |===================|
|  =====    =====   |     |  =====    =====   |
| |     |  |     |  |     | |     |  |     |  |
| | img |  | img |  |     | | img |  | img |  |
| |  1  |  |  2  |  |     | |  1  |  |  2  |  |
|  =====    =====   |     |  =====    =====   |
|===================|     |===================|
|   fixed   div     |     |   fixed   div     |
|===================|     |===================|
| |  3  |  |  4  |  |     |  =====    =====   |
|  =====    =====   |     | |     |  |     |  |
|  =====    =====   |     | | img |  | img |  |
| |     |  |     |  |     | |  3  |  |  4  |  |
| | img |  | img |  |     |  =====    =====   |
|===================|     |===================|

滚动一下

|===================|     |===================|
| | img |  | img |  |     | | img |  | img |  |
| |  1  |  |  2  |  |     | |  1  |  |  2  |  |
|  =====    =====   |     |  =====    =====   |
|  =====    =====   |     |  =====    =====   |
| |     |  |     |  |     | |     |  |     |  |
|===================|     |===================|
|   fixed   div     |     |   fixed   div     |
|===================|     |===================|
|  =====    =====   |     | | img |  | img |  |
| |     |  |     |  |     | |  3  |  |  4  |  |
| | img |  | img |  |     |  =====    =====   |
| |  5  |  |  6  |  |     |  =====    =====   |
|  =====    =====   |     | |     |  |     |  |
|===================|     |===================|

滚动一点

|===================|     |===================|
|  =====    =====   |     |  =====    =====   |
|  =====    =====   |     |  =====    =====   |
| |     |  |     |  |     | |     |  |     |  |
| | img |  | img |  |     | | img |  | img |  |
| |  3  |  |  4  |  |     | |  3  |  |  4  |  |
|===================|     |===================|
|   fixed   div     |     |   fixed   div     |
|===================|     |===================|
| | img |  | img |  |     |  =====    =====   |
| |  5  |  |  6  |  |     |  =====    =====   |
|  =====    =====   |     | |     |  |     |  | 
|  =====    =====   |     | | img |  | img |  |
| |     |  |     |  |     | |  5  |  |  6  |  |
|===================|     |===================|

Answer 1

在这里,我快速整理了html,css和jquery的组合,这对我在Chrome中起作用.

jsfiddle演示

HTML:

    <div id="toppart">
        <div class="tiles">
            <div class="tile">1</div>
            <div class="tile">2</div>
            <div class="tile">3</div>
            <div class="tile">4</div>
            <div class="tile">5</div>
            <div class="tile">6</div>
        </div>
    </div>
    <div id="strap">
        <p>the fixed strap</p>
    </div>
    <div id="bottompart"></div>

css的关键部分:

#strap {
    position:absolute;
    top:45%;
    height: 10%;
    background-color:blue;
}
#toppart, #bottompart {
    background-color:#fff;
    position:absolute;
    height:45%;
    overflow:auto;
}
#bottompart {
    top:55%;
    z-index:-1;
}

#bottompart div {
    position:relative;
    top:-100%;
}

和JavaScript代码:

    $(document).ready(function () {
          //mirror contents
          $('#bottompart').append($('#toppart').html());
          //scroll bottom with top
          $("#toppart").scroll(function(){
                 $("#bottompart").scrollTop($("#toppart").scrollTop());
          });
          //scroll top with bottom
          $("#bottompart").scroll(function(){
                 $("#toppart").scrollTop($("#bottompart").scrollTop());
          });
    });

希望你能得到这个想法;-)

Answer 2

这对于 CSS 来说是不可能的。我看到的唯一可行的实现是让顶部和底部 div 具有完全相同的内容，侦听它们的 onscroll 事件，然后将它们与另一个具有所需间隙的“同步”。不过，您可能需要对 iOS 设备进行一些降级，因为它们在滚动完成之前不会发送 onscroll 事件。