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问题描述



p + p

是:




  • 关系运算符

  • 基于位置的条件

  • 还有什么吗?



我不知道该叫什么。是否有官方名称?



(以及 abc 在 abc ?中的 abc,def 和 a $ b

解决方案

根据,它们被称为组合器。



感谢Duncan Babbage指出有(或只有)其中三个:


  1. 空格字符=后裔

  2. > =子

  3. + plus mark = adjacent following(next)sibling

  4. 而CSS3添加了一个符号〜 =一般关系同级


What do you call these:

body > p + p

in a CSS selector? Are they:

  • Relational operators
  • Position-based criteria
  • Something else?

I just have no idea what to call them. Is there an official name?

(And, also, are there official names for a b c in a b c, d e f and a in a b c?)

解决方案

According to http://www.w3.org/TR/CSS2/selector.html#selector-syntax they are called "combinators".

Thanks to Duncan Babbage for pointing out there are (or were) only three of them:

  1. space character = descendant
  2. > = child
  3. + plus mark = adjacent following (next) sibling
  4. And CSS3 adds a tilde ~ = general following sibling

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08-16 03:02