使用CSS悬停时的表tr背景渐变

Question

我的要求：

在tr悬停时，tr将具有线性渐变背景，而不仅仅是平坦的背景颜色。

tr:中的样本td

A  |  B  |  C  |  B  |  A

其中A darker --> C lighter

JSFIDDLE:

https://jsfiddle.net/g7o84j43/

我尝试过的代码：

HTML:

<table border="1px" width="100%" cellpadding="0px" cellspacing="0px">
<tr style="text-align:center">
    <td>A</td>
    <td>B</td>
    <td>C</td>
    <td>B</td>
    <td>A</td>
</tr>
<tr style="text-align:center">
    <td>A</td>
    <td>B</td>
    <td>C</td>
    <td>B</td>
    <td>A</td>
</tr>
</table>

CSS:

tr:hover
{
    background: -webkit-linear-gradient(left, rgba(255,0,0,0), rgba(255,0,0,1)); /* For Safari 5.1 to 6.0 */
    background: -o-linear-gradient(right, rgba(255,0,0,0), rgba(255,0,0,1)); /* For Opera 11.1 to 12.0 */
    background: -moz-linear-gradient(right, rgba(255,0,0,0), rgba(255,0,0,1)); /* For Firefox 3.6 to 15 */
    background: linear-gradient(to right, rgba(255,0,0,0), rgba(255,0,0,1)); /* Standard syntax (must be last) */
}

有什么想法可以实现吗？

Answer 1

在hover上为tr设置梯度背景的最简单、最直接的解决方案是将background-attachment: fixed也添加到其中。

tr:hover {
  background: linear-gradient(to right, rgba(255, 0, 0, 1), rgba(255, 0, 0, 0), rgba(255, 0, 0, 1));
  background-attachment: fixed;
}

<!-- prefix library included only to avoid vendor prefixes -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script>
<table border="1px" width="100%" cellpadding="0px" cellspacing="0px">
  <tr style="text-align:center">
    <td>A</td>
    <td>B</td>
    <td>C</td>
    <td>B</td>
    <td>A</td>
  </tr>
  <tr style="text-align:center">
    <td>A</td>
    <td>B</td>
    <td>C</td>
    <td>B</td>
    <td>A</td>
  </tr>
</table>

---

这里有一种不同的方法，用于在悬停在行（tr）上时向其添加渐变背景。在这种方法中，我们将渐变作为背景添加到table元素本身，然后将其覆盖为纯色（白色）的未覆盖状态。当tr悬停时，tr的背景被设置为transparent，因此table的背景通过显示梯度来显示。

table {
  background: linear-gradient(to right, rgba(255, 0, 0, 0), rgba(255, 0, 0, 1));
}
tr {
  background: white;
}
tr:hover {
  background: transparent;
}

<!-- prefix library included only to avoid vendor prefixes -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script>
<table border="1px" width="100%" cellpadding="0px" cellspacing="0px">
  <tr style="text-align:center">
    <td>A</td>
    <td>B</td>
    <td>C</td>
    <td>B</td>
    <td>A</td>
  </tr>
  <tr style="text-align:center">
    <td>A</td>
    <td>B</td>
    <td>C</td>
    <td>B</td>
    <td>A</td>
  </tr>
</table>

---

如果较浅的颜色需要在中心，那么可以像下面的片段一样修改渐变：

table {
  background: linear-gradient(to right, rgba(255, 0, 0, 1), rgba(255, 0, 0, 0), rgba(255, 0, 0, 1));
}
tr {
  background: white;
}
tr:hover {
  background: transparent;
}

<!-- prefix library included only to avoid vendor prefixes -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script>
<table border="1px" width="100%" cellpadding="0px" cellspacing="0px">
  <tr style="text-align:center">
    <td>A</td>
    <td>B</td>
    <td>C</td>
    <td>B</td>
    <td>A</td>
  </tr>
  <tr style="text-align:center">
    <td>A</td>
    <td>B</td>
    <td>C</td>
    <td>B</td>
    <td>A</td>
  </tr>
</table>

Answer 2

也许不是最好的解决方案，但可能对您来说已经足够好了，而且它也可以在Chrome中使用演示

HTML:

<div class="table-wrapper">
    <table>
        ...
    </table>
</div>

CSS:

/* To hide the overflow */
.table-wrapper{
    position: relative;
    overflow: hidden;
}
tr{
    position: relative;
}
/* Making the background with :before pseudo-element */
tr:before
{
    position: absolute;
    content: "";
    width: 100%;
    height: 20px;
    z-index: -1;
}
tr:hover:before
{
    background: -webkit-linear-gradient(left, rgba(255,0,0,0), rgba(255,0,0,1)); /* For Safari 5.1 to 6.0 */
    background: -o-linear-gradient(right, rgba(255,0,0,0), rgba(255,0,0,1)); /* For Opera 11.1 to 12.0 */
    background: -moz-linear-gradient(right, rgba(255,0,0,0), rgba(255,0,0,1)); /* For Firefox 3.6 to 15 */
    background: linear-gradient(to right, rgba(255,0,0,0), rgba(255,0,0,1)); /* Standard syntax (must be last) */
}