样式组件的多个道具选项 [英] Multiple Props Options for Styled Components

问题描述

我有一个使用样式化组件创建的导航栏组件.我想创建一些改变背景颜色和/或文本颜色的道具.

I have a navbar component that I have created using Styled Components. I would like to create some props that change the background-color and/or text color.

例如: 应具有以下 CSS:

For instance: <Navbar dark> should have the following CSS:

background: #454545;
color: #fafafa;

而 应该是相反的:

background: #fafafa;
color: #454545;

但是，如果两个 prop 都没有使用，那么我想要一个默认的背景和文本颜色——比如说(为了演示目的)，像这样:

If, however, neither prop is used, then I want to have a default background and text color -- say (for demo purposes), something like this:

background: #eee;
color: #333;

现在，我的问题是如何在 Styled Components 中进行设置.

Now, my question is how to set this up in Styled Components.

我可以执行以下操作:

background: ${props => props.dark ? #454545 : '#eee'}
background: ${props => props.dark ? #fafafa : '#eee'}
background:  #eee;

还有类似的颜色.

但这是多余的，不是很优雅.我想要某种 if/else 语句:

But this is redundant and not very elegant. I would like some sort of if/else statement:

background: ${ props => { 
  if (props.dark) { #454545 }
  elseif (props.light) { #fafafa }
  else { #eee }
}

但我不知道如何在 Styled Components 中设置类似的东西.

But I don't know how to set something like that up in Styled Components.

有什么建议吗?

提前致谢.

推荐答案

这是我最终使用的解决方案:

This is the solution I ended up using:

export const Navbar = styled.nav`
  width: 100%;

  ...  // rest of the regular CSS code

  ${props => {
    if (props.dark) {
      return `
        background: ${colors.dark};
        color: ${colors.light};
    `
    } else if (props.light) {
      return `
        background: ${colors.light};
        color: ${colors.dark};
    `
    } else {
      return `
        background: ${colors.light};
        color: ${colors.dark};
    `
    }
  }}
`

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