html - 通过容器蒙版单击按钮

Question

我有一个包含一些可点击元素的容器，在容器的底部，有一个渐变，我用 .container:after 添加它来创建淡入淡出效果。我仍然希望底部的元素可点击，但也会受到淡入淡出的影响，因此将淡入淡出放在可点击元素后面是行不通的。

http://jsfiddle.net/mwjj7hff/1/

HTML:

<div class="container">
    <ul>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
        <li>Item</li>
    </ul>
</div>

CSS:

.container {
    border: 1px solid #ccc;
    font-family: sans-serif;
    height: 400px;
    overflow: hidden;
    position: relative;
    width: 200px;
}

.container:after {
    background: linear-gradient(to bottom, rgba(255, 255, 255, .3) 0%, white 100%);
    bottom: 0;
    content: " ";
    height: 150px;
    display: block;
    position: absolute;
    width: 100%;
}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

li {
    cursor: pointer;
    margin: 3px;
    padding: 3px;
    text-align: center;
}

li:hover {
   background: #99d; 
}

Answer 1

一个快速、简单的解决方案是添加 pointer-events: none到伪元素。

这样做时，您实际上可以点击通过它:

MDN - pointer-events: none

The element is never the target of mouse events; however, mouse events may target its descendant elements if those descendants have pointer-events set to some other value. In these circumstances, mouse events will trigger event listeners on this parent element as appropriate on their way to/from the descendant during the event capture/bubble phases.

Updated Example

.container:after {
    background: linear-gradient(to bottom, rgba(255, 255, 255, .3) 0%, white 100%);
    bottom: 0;
    content: " ";
    height: 150px;
    display: block;
    position: absolute;
    width: 100%;
    pointer-events: none;
}

浏览器对pointer-events的支持可以是found here - 目前为 87.29%。