子选择器

概述

当使用  > 选择符分隔两个元素时,它只会匹配那些作为第一个元素的直接后代(子元素)的第二元素. 与之相比, 当两个元素由 后代选择器 相连时, 它表示匹配存在的所有由第一个元素作为祖先元素(但不一定是父元素)的第二个元素, 无论它在 DOM 中"跳跃" 多少次.

语法

元素1 > 元素2 {样式声明 }

示例

span { background-color: white; }
div > span {
  background-color: DodgerBlue;
}

当应用与如下标记时:

<div>
  <span>Span 1. In the div.
    <span>Span 2. In the span that's in the div.</span>
  </span>
</div>
<span>Span 3. Not in a div at all</span>

会得到下面的效果:

Span 1. In the div. Span 2. In the span that's in the div.
Span 3. Not in a div at all.

规范

Specification Status Comment
CSS Selectors Level 3 Recommendation  
CSS 2.1 Recommendation  

浏览器兼容性

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Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) 7.0 (Yes) (Yes)
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? ? ? ?

相关

相关主题
  1. CSS
  2. CSS 参考
  3. CSS Selectors
  4. Guides
    1. 在选择器中使用 :target 伪类
  5. Basic Selectors
    1. 元素选择器
    2. 类选择器
    3. ID选择器
    4. 通配选择器
    5. 属性选择器
  6. Combinators
    1. 相邻兄弟选择器
    2. 通用兄弟选择器
    3. 子选择器
    4. 后代选择器
    5. Column combinator [我来译!]
  7. Pseudo-classes
    1. :active
    2. :any-link
    3. :checked
    4. :blank [我来译!]
    5. :default
    6. :defined
    7. :dir()
    8. :disabled
    9. :empty
    10. :enabled
    11. :first
    12. :first-child
    13. :first-of-type
    14. :fullscreen
    15. :focus
    16. :focus-within
    17. :has
    18. :host() [我来译!]
    19. :host-context() [我来译!]
    20. :hover
    21. :indeterminate
    22. :in-range
    23. :invalid
    24. :matches() (:any())
    25. :lang
    26. :last-child
    27. :last-of-type
    28. :left
    29. :link
    30. :not()
    31. :nth-child
    32. :nth-last-child
    33. :nth-last-of-type
    34. :nth-of-type
    35. :only-child
    36. :only-of-type
    37. :optional
    38. :out-of-range
    39. :placeholder-shown
    40. :read-only
    41. :read-write
    42. :required
    43. :right [我来译!]
    44. :root
    45. :scope
    46. :target
    47. :valid
    48. :visited
    49. :where() - The specificity adjustment pseudo-class
  8. Pseudo-elements
    1. ::-moz-progress-bar
    2. ::-moz-range-progress [我来译!]
    3. ::-moz-range-thumb [我来译!]
    4. ::-moz-range-track [我来译!]
    5. ::-ms-browse [我来译!]
    6. ::-ms-check
    7. ::-ms-clear
    8. ::-ms-expand [我来译!]
    9. ::-ms-fill [我来译!]
    10. ::-ms-fill-lower [我来译!]
    11. ::-ms-fill-upper [我来译!]
    12. ::-ms-reveal [我来译!]
    13. ::-ms-thumb [我来译!]
    14. ::-ms-ticks-after [我来译!]
    15. ::-ms-ticks-before [我来译!]
    16. ::-ms-tooltip [我来译!]
    17. ::-ms-track [我来译!]
    18. ::-ms-value [我来译!]
    19. ::-webkit-progress-bar
    20. ::-webkit-progress-value [我来译!]
    21. ::-webkit-slider-runnable-track
    22. ::-webkit-slider-thumb
    23. ::after (:after)
    24. ::backdrop
    25. ::before (:before)
    26. ::cue (:cue)
    27. ::first-letter (:first-letter)
    28. ::first-line (:first-line)
    29. ::grammar-error
    30. ::placeholder
    31. ::selection
    32. ::slotted()
    33. ::spelling-error