英文:
what's the difference between including a mixin with () and without () in sass?
问题
我正在创建一个CSS库，我在我的Sass代码中使用了一个mixin，我想知道下面的示例中@include btn和@include btn()之间有什么区别？因为它们产生相同的结果...
//index.scss
@mixin btn($bg-color: red) {
text-decoration: none;
cursor: pointer;
display: inline-block;
border: 0;
background: $bg-color;
}
//第一种类型
.btn {
@include btn();
}
//第二种类型
.btn {
@include btn;
}
英文:
I am creating a CSS library and I was using a mixin in my sass code, I was wondering what's the difference between @include btn and @include btn() in the example below? because they have the same result...
//index.scss
@mixin btn($bg-color: red) {
text-decoration: none;
cursor: pointer;
display: inline-block;
border: 0;
background: $bg-color;
}
//first type
.btn {
@include btn();
}
//second type
.btn {
@include btn;
}
答案1
得分: 1
在Sass中，@include btn 和 @include btn()之间的区别在于参数传递的方式。
当你使用@include btn;时，你只是简单地包含了这个混合器，没有传递任何参数。这意味着它将使用混合器内部定义的默认值，而在这种情况下，默认的背景颜色是red。
另一方面，当你使用@include btn();时，你明确地使用了空括号调用了混合器。这允许你覆盖默认值并传递不同的参数（如果需要的话）。在你的示例中，由于你没有传递任何参数，它仍然会使用背景颜色的默认值red。
所以在你的特定情况下，@include btn 和 @include btn();都会产生相同的结果，因为你没有传递任何参数，将使用默认值red。然而，使用@include btn();在未来如果你想传递不同的参数提供了更大的灵活性。
英文:
In Sass, the difference between @include btn and @include btn() lies in the way arguments are passed to the mixin.
When you use @include btn;, you are simply including the mixin without any arguments. This means it will use the default values defined within the mixin, which in this case is red for the background color.
On the other hand, when you use @include btn();, you are explicitly calling the mixin with empty parentheses. This allows you to override the default values and pass different arguments if needed. In your example, since you are not passing any arguments, it will still use the default value of red for the background color.
So in your specific case, both @include btn and @include btn(); will have the same result because you are not passing any arguments and the default value of red will be used. However, using @include btn(); provides more flexibility in case you want to pass different arguments in the future.
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