Javascript \\ jQuery：是否可以使用x和y坐标覆盖元素？

Question

可以通过搜索，找到父元素然后添加到它们之前而不是绝对地定位（我必须这样做，不要问为什么）元素在其他元素上，可以通过坐标找到某些元素的位置，然后简单地调整窗口大小时重新计算替换的坐标？

Answer 1

You can do this by subtracting your margins.

If you were to append a child into a container that already contained a child just subtract the same height as the existing child from the new childs margin.

Notice the margin-top:-100px below

  <div id="parentContainer" style="width:100px;height:100px;float:left">

        <div id="child1" style="width:100px;height:100px;float:left;background-color:red">

        </div>

        <div id="child2" style="width:100px;height:100px;float:left;background-color:blue;
                                margin-top:-100px">
        </div>

  </div>

If you prepend the do a margin-bottom:-100px