Tailwind组件中的动态颜色问题

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英文:

Trouble with Dynamic Color in Tailwind Component

问题

我遇到了困难,不理解为什么蓝色在我的组件中不起作用。您能帮我在Stack Overflow上解决这个问题吗?我有一个应用不同背景和文本颜色的Tag组件,根据提供的color属性。然而,当我将color属性设置为“blue”时,组件没有应用预期的蓝色。我尝试过各种解决方案,包括动态构建类名和使用Tailwind CSS类的正确语法。然而,我未能解决这个问题。对您提前的任何帮助都将不胜感激!

英文:

I'm having trouble understanding why the blue color is not working in my component. Could you please help me troubleshoot this issue on Stack Overflow? I have a Tag component that should apply different background and text colors based on the color prop provided. However, when I set the color prop to "blue", the expected blue color is not being applied to the component. I have tried various solutions, including dynamically constructing the class names and using the correct syntax for Tailwind CSS classes. However, I have been unsuccessful in resolving the issue. Any guidance or suggestions would be greatly appreciated. Thank you in advance for your assistance!

    import React from "react";
    
    export default function Tag({ index, tag, color = "red" }) {
      return (
        <li
          key={index}
          className={`inline-flex items-center rounded-full px-3 py-2 text-xs font-bold uppercase bg-${color}-200 text-${color}-700`}
        >
          <a href={`/?=${tag.text.replace(/\s/g, "_").toLowerCase()}`}>
            {tag.text}
          </a>
        </li>
      );
    }```



</details>


# 答案1
**得分**: 2

根据[文档](https://tailwindcss.com/docs/content-configuration#dynamic-class-names):

> Tailwind提取类名的最重要影响是它只会在源文件中作为_完整不间断字符串_存在的类名。
>
> 如果您使用字符串插值或连接部分类名在一起,Tailwind将无法找到它们,因此不会生成相应的CSS:
>
> **不要动态构建类名**
>
> ```vue
> <div class="text-{{ error ? 'red' : 'green' }}-600"></div>
> ```
>
> 在上面的示例中,字符串`text-red-600`和`text-green-600`不存在,因此Tailwind不会生成这些类。
> 相反,确保您使用的任何类名都完整存在:
>
> **始终使用完整的类名**
>
> ```vue
> <div class="{{ error ? 'text-red-600' : 'text-green-600' }}"></div>
> ```

您可以:
 - 将整个类放在传递给 `className` 的变量中,如下所示:
   ```jsx
   export default function Tag({ index, tag, color = "bg-red-200 text-red-700" }) {
     return (
       <li
         key={index}
         className={`… ${color}`}
        >
  • color 创建一个字典以映射到Tailwind类名,如下所示:

    export default function Tag({ index, tag, color = "red" }) {
      const DICTIONARY = {
        red: 'bg-red-200 text-red-700',
        // …
      };
      // …
      return (
        <li
          key={index}
          className={`… ${DICTIONARY[color]}`}
         >
    
  • 如果theme可以转换为有效的CSS颜色值(或者您可以从Tailwind获取颜色),可以使用 style 属性实现真正的动态颜色,如下所示:

    export default function Tag({ index, tag, color = "red" }) {
      const styles = {
        // 从`color`变量转换
      };
      // …
      return (
        <li
          key={index}
          className="…"
          style={style}
         >
    
  • 如果您有一组已知的颜色,可以使用safelist这些类,示例如下:

    module.exports = {
      safelist: [
        { pattern: /^text-(red|green|blue)-700$/ },
        { pattern: /^bg-(red|green|blue)-200$/ },
        // …
      ],
      // …
    };
    
英文:

As per the documentation:

> The most important implication of how Tailwind extracts class names is that it will only find classes that exist as complete unbroken strings in your source files.
>
> If you use string interpolation or concatenate partial class names together, Tailwind will not find them and therefore will not generate the corresponding CSS:
>
> Don’t construct class names dynamically
>
> vue
&gt; &lt;div class=&quot;text-{{ error ? &#39;red&#39; : &#39;green&#39; }}-600&quot;&gt;&lt;/div&gt;
&gt;

> In the example above, the strings text-red-600 and text-green-600 do not exist, so Tailwind will not generate those classes.
> Instead, make sure any class names you’re using exist in full:
>
> Always use complete class names
>
> vue
&gt; &lt;div class=&quot;{{ error ? &#39;text-red-600&#39; : &#39;text-green-600&#39; }}&quot;&gt;&lt;/div&gt;
&gt;

You could:

  • Have the entire class in the variable you pass to className like

    export default function Tag({ index, tag, color = &quot;bg-red-200 text-red-700&quot; }) {
      return (
        &lt;li
          key={index}
          className={`… ${color}`}
         &gt;
    
  • Have a dictionary for color to Tailwind class names:

    export default function Tag({ index, tag, color = &quot;red&quot; }) {
      const DICTIONARY = {
        red: &#39;bg-red-200 text-red-700&#39;,
        // …
      };
      // …
      return (
        &lt;li
          key={index}
          className={`… ${DICTIONARY[color]}`}
         &gt;
    
  • Use the style attribute for truly dynamic colors, if theme can be converted to a valid CSS color value (or you could get the color from Tailwind):

    export default function Tag({ index, tag, color = &quot;red&quot; }) {
      const styles = {
        // Convert from `color` variable
      };
      // …
      return (
        &lt;li
          key={index}
          className=&quot;&quot;
          style={style}
         &gt;
    
  • safelist the classes, if you have a limited number of known colors:

    module.exports = {
      safelist: [
        { pattern: /^text-(red|green|blue)-700$/ },
        { pattern: /^bg-(red|green|blue)-200$/ },
        // …
      ],
      // …
    ];
    

huangapple
  • 本文由 发表于 2023年5月29日 02:34:18
  • 转载请务必保留本文链接:https://go.coder-hub.com/76353036.html
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