CSS scss 选择器中的 & 是什么意思?

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时间:2020-08-30 12:05:26  来源:igfitidea点击:

What does the & mean in an scss selector?

csssasssyntaxselector

提问by Zhirayr

What does &refer to in an scss selector?

什么是&指在SCSS选择?

    //Case 1

    .parent {
      & > ul {
        color: red
      }
    }

    //Case 2

    .parent {
      & > ul {
        & > li {
          color: blue;
        }
      } 
    }

    //Case 3

    .parent {
      & > ul {
        & > li {
          color: blue;
          &:hover {
            color: pink
          }
        }
      }
    }

回答by andreas

The &is a placeholder for the parent selector:

是父选择器的占位符:

.parent {
  & > ul {
    color: red
  }
}

Is the same like

是不是一样

.parent > ul {
  color: red
}

A common use case are pseudo classes, e.g.:

一个常见的用例是伪类,例如:

.link {
  &:hover {
    color: red
  }
}

A nice explanation with examples can be found on CSS Tricks.

可以在CSS Tricks上找到带有示例的很好的解释。