更改选择标签下特定选项的颜色

Posted 2023-05-07

【中文标题】更改选择标签下特定选项的颜色

【英文标题】：Change color of a particular option under select tag

【发布时间】：2021-01-21 05:50:10

【问题描述】：

我正在使用 select 2 https://select2.org/，我想知道如何使用 value="4" 更改所选选项的颜色。 So when Mark as destroyed is selected it shows in a different colour.我尝试直接设置类和内联 css，但都不起作用。

Not working: <option value="4" class="tx-orange">Mark as destroyed</option>

Not working: <option value="4" style="color:orange;">Mark as destroyed</option>

这是选择块的样子

<select id="scanActionOptions" class="form-control select2">
   <option value="0">Verify</option>
   <option value="1">Mark as active</option>
   <option value="2">Mark as dispense</option>
   <option value="3">Mark as stolen</option>
   <option value="4">Mark as destroyed</option>
   <option value="5">Mark as sample</option>
   <option value="6">Mark as free sample</option>
   <option value="7">Mark as locked</option>
   <option value="8">Mark as exported</option>
   <option value="9">Mark as checkout</option>
   <option value="10">Mark as expired</option>
   <option value="11">Mark as recalled</option>
   <option value="12">Mark as withdrawn</option>
</select>

【问题讨论】：

您需要设置 select 2 替换的样式 - 而不是选项

【参考方案1】：

$(document).ready(function() 
    $('.select2').select2();
);

/*selected css*/
.select2-container--default .select2-results__option--selected 
   color: orange;
   background:rgb(221 221 221 / 32%) !important;


/*hover css*/
.select2-container--default .select2-results__option--highlighted.select2-results__option--selectable 
    background-color: orange !important;
    color: white;


/*particular option color*/
.select2-container--default .select2-results>.select2-results__options li:nth-child(2) 
color: #fff;
background: red !important;

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link href="https://cdn.jsdelivr.net/npm/select2@4.1.0-beta.1/dist/css/select2.min.css" rel="stylesheet" />
<script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-beta.1/dist/js/select2.min.js"></script>


<select id="scanActionOptions" class="form-control select2">
   <option value="0">Verify</option>
   <option value="1">Mark as active</option>
   <option value="2">Mark as dispense</option>
   <option value="3">Mark as stolen</option>
   <option value="4">Mark as destroyed</option>
   <option value="5">Mark as sample</option>
   <option value="6">Mark as free sample</option>
   <option value="7">Mark as locked</option>
   <option value="8">Mark as exported</option>
   <option value="9">Mark as checkout</option>
   <option value="10">Mark as expired</option>
   <option value="11">Mark as recalled</option>
   <option value="12">Mark as withdrawn</option>
</select>

如果您需要更改所选颜色，请在“.select2-container--default .select2-results__option--selected”上应用 css 并更改悬停 css，然后应用在“.select2-container--default .select2-results__option-- highlight.select2-results__option--selectable”。 如果您需要像第二个选项这样的颜色特定选项，那么您可以使用 ".select2-container--default .select2-results>.select2-results__options li:nth-child(2)" 。

【参考方案2】：

Select2 CSS 似乎从这个规则集中获得了样式

.select2-container--default .select2-results__option--highlighted.select2-results__option--selectable 
    background-color: #5897fb;
    color: white;

您可以使用 li:nth-child(x) 应用于前面显示的规则集。应用于原始选择的 CSS 将不可见。

【讨论】：

可以根据option值来代替li:nth-child(x)吗？我在不同页面有相同的列表，但选项可能不同