Table 悬停时使用 CSS tr 背景渐变

Question

我的要求：

在tr悬停时，tr会有线性渐变背景，不仅是纯色背景。

tr 中的示例 td：

A  |  B  |  C  |  B  |  A

哪里A darker --> C lighter

JSFIDDLE:

https://jsfiddle.net/g7o84j43/

我试过的代码：

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) */
}

有什么实现方法吗？

Answer 1

也许不是最好的解决方案，但对您来说可能已经足够好了，而且它也适用于 Chrome。 DEMO

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) */
}

Answer 2

在 hover 上为 tr 设置渐变背景的最简单直接的解决方案是同时添加 background-attachment: fixed。

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>

这是将鼠标悬停在行 (tr) 上时向其添加渐变背景的另一种方法。在这种方法中，我们将渐变作为背景添加到 table 元素本身，然后将其覆盖为未悬停状态为纯色（白色）。当 tr 悬停时，tr 的背景设置为 transparent，因此 table 背景通过显示渐变显示。

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居中，则可以像下面的代码片段那样修改渐变：

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>

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