如何在 scss 中使用祖父选择器 [英] how to use grandparent selector in scss

问题描述

我需要使用不同颜色的图标在 5 种状态中设置我的按钮组件的样式，并用于以下 css

I need to style my button component in 5 states with differently colored icon and use for this following css

#add-member-dialog #add-username-to-list .to-list-button-icon:before {
    content: url("../images/func_personplus_16_ena.png");
}
#add-member-dialog #add-username-to-list:hover .to-list-button-icon:before {
    content: url("../images/func_personplus_16_hov.png");
}
#add-member-dialog #add-username-to-list:disabled .to-list-button-icon:before {
    content: url("../images/func_personplus_16_dis.png");
}
#add-member-dialog #add-username-to-list:active .to-list-button-icon:before {
    content: url("../images/func_personplus_16_act.png");
}
#add-member-dialog #add-username-to-list:active:hover .to-list-button-icon:before {
    content: url("../images/func_personplus_16_onb.png");
}

此类项目在与#add-username-to-list 相关的伪类中有所不同.我试图将整个 css 文件切换到 scss 并想优化这种样式，但我无法进一步:

such items differs in pseudoclasses related to #add-username-to-list. I tried to switch entire css file to scss and wanted to optimize this style but I was not able move further than:

#add-member-dialog {
  #add-username-to-list {
    .to-list-button-icon:before {
      content: url("../images/func_personplus_16_ena.png");
    }
    &:hover .to-list-button-icon:before {
      content: url("../images/func_personplus_16_hov.png");
    }
    &:disabled .to-list-button-icon:before {
      content: url("../images/func_personplus_16_dis.png");
    }
    &:active .to-list-button-icon:before {
      content: url("../images/func_personplus_16_act.png");
    }
    &:active:hover .to-list-button-icon:before {
      content: url("../images/func_personplus_16_onb.png");
    }
  }
}

可以做这样的事情吗?

#add-member-dialog {
  #add-username-to-list {
    .to-list-button-icon:before {
      content: url("../images/func_personplus_16_ena.png");

      &&:hover & {
        content: url("../images/func_personplus_16_hov.png");
      }
      ...
    }
  }
}

其中 && 将代表祖父选择器 #add-username-to-list.

where && will represents grandparent selector #add-username-to-list.

我也尝试应用模式 #{$grandparent}:tmp $ 但结果选择器看起来像这样:#add-member-dialog #add-username-to-list:tmp #add-member-dialog #add-username-to-list .to-list-button-icon:before

I also tried to apply pattern #{$grandparent}:tmp $ but the result selector looked like this: #add-member-dialog #add-username-to-list:tmp #add-member-dialog #add-username-to-list .to-list-button-icon:before

#add-member-dialog {
  #add-username-to-list {
    $grandparent: &;

    .to-list-button-icon:before {
      content: url("../images/func_personplus_16_ena.png");

      #{$grandparent}:hover & {
        content: url("../images/func_personplus_16_hov.png");
      }
      ...
    }
  }
}

任何建议这是否可能?

推荐答案

你可以使用插值来打印你的祖父选择器(注意@at-root):

You can use interpolation to print out your grandparent selector (note the @at-root):

#add-member-dialog {
    #add-username-to-list {
        $g: &;                               // grandparent
        $p: '../images/func_personplus_16_'; // icon path
        @at-root {
            .to-list-button-icon:before { 
                #{$g} &          { content: url(#{$p}ena.png); }                
                #{$g}:hover &    { content: url(#{$p}hov.png); }
                #{$g}:disabled & { content: url(#{$p}dis.png); }
                #{$g}:active &   { content: url(#{$p}act.png); }                
                #{$g}:active:hover &   { content: url(#{$p}onb.png); }                                
            }
        }
    }
}

这篇关于如何在 scss 中使用祖父选择器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！