如何创建支持内容块的Sass mixin别名？

Question

如何为同一个mixin定义多个名称并支持内容块？

定义

@mixin desktop-breakpoint {
   @media only screen and (min-width: 769px) {
      @content;
   }
}

@mixin large-breakpoint {
   @include desktop-breakpoint;
}

用法

.my-class {
   font-size: small;

   @include desktop-breakpoint {
      font-size: big;
   }
}

.my-other-class {
   color: red;

   @include large-breakpoint {
      color: blue;
   }
}

错误信息

Mixin“大断点”不接受内容块。

Answer 1

在mixin中@content使用时@include desktop-breakpoint，您不会传递任何东西large-breakpoint。这样做将解决您的编译错误：

@mixin large-breakpoint {
   // Remember to pass content received by mixin to @include
   @include desktop-breakpoint {
     @content;
   }
}

然后，您的CSS将按预期正确编译：

.my-class {
  font-size: small;
}
@media only screen and (min-width: 769px) {
  .my-class {
    font-size: big;
  }
}

.my-other-class {
  color: red;
}
@media only screen and (min-width: 769px) {
  .my-other-class {
    color: blue;
  }
}

请参阅基于修改后的代码的概念验证示例：https : //www.sassmeister.com/gist/3109af060293eed0b89a22c27fa20527