如果一个规则有额外的选项，你可以使用数组字面量指定它们，比如。

If a rule has additional options, you can specify them using array literal syntax, such as.

youdao

即如果数组字面量元素集合的最后是逗号，逗号会被忽略最后数组逗号掉。

If you include a trailing comma at the end of the list of elements, the comma is ignored.

youdao

即如果数组字面量元素集合的最后是逗号，逗号会被忽略最后数组逗号掉。

If you include a trailing comma at the end of the list of elements, the comma is ignored.

youdao