Question

考虑这些课程：

log

.bio-target-measure {
  opacity: 1;
}
.bio-target-measure:not(.lowerThird-25.lowerThird-active):not(.lowerThird-50.lowerThird-active):not(.lowerThird-100.lowerThird-active):not(.middleThird-25.middleThird-active):not(.middleThird-50.middleThird-active):not(.middleThird-100.middleThird-active):not(.upperThird-25.upperThird-active):not(.upperThird-50.upperThird-active):not(.upperThird-100.upperThird-active):not(.bud-25.bud-active):not(.bud-50.bud-active):not(.bud-100.bud-active) {
  opacity: 0 !important;
}

这些jQuery调用：

<div class="mark bio-target-measure upperThird-100" title="Muestra
        Plaga: Oidio
        ID: [4]
        Tercios: [&quot;upperThird&quot;]" style="width:100.0%;height:100%;color:white;background-color:#6a6200;">Test</div>

但是这个元素的不透明度，满足var measures = $('.bio-target-measure'); measures.length; // evaluates to 1. measures.is('.bio-target-measure:not(.lowerThird-25.lowerThird-active):not(.lowerThird-50.lowerThird-active):not(.lowerThird-100.lowerThird-active):not(.middleThird-25.middleThird-active):not(.middleThird-50.middleThird-active):not(.middleThird-100.middleThird-active):not(.upperThird-25.upperThird-active):not(.upperThird-50.upperThird-active):not(.upperThird-100.upperThird-active):not(.bud-25.bud-active):not(.bud-50.bud-active):not(.bud-100.bud-active)'); // evaluates to true. var emptyMeasures = $('.bio-target-measure:not(.lowerThird-25.lowerThird-active):not(.lowerThird-50.lowerThird-active):not(.lowerThird-100.lowerThird-active):not(.middleThird-25.middleThird-active):not(.middleThird-50.middleThird-active):not(.middleThird-100.middleThird-active):not(.upperThird-25.upperThird-active):not(.upperThird-50.upperThird-active):not(.upperThird-100.upperThird-active):not(.bud-25.bud-active):not(.bud-50.bud-active):not(.bud-100.bud-active)'); emptyMeasures.length; // evaluates to 1.的选择器（正如使用jQuery看到的），是1.我的谷歌浏览器（47.0.2526.106，Ubuntu 15.04， 64位）浏览器仅使用第一条规则（仅是澄清：不存在opacity 0的规则 - 但是覆盖：匹配中完全没有。）< / p>

问题：是不是规则（因为我用它）一个有效的CSS选择器？我知道它适用于jQuery，但我问的是CSS。

Answer 1

根据@Harry的评论，你不能在:not()中使用组合选择器。（由@TJCrowder提供的证据：:not，simple selector，sequence of selectors）

在这种情况下，您需要重新修改逻辑：

.bio-target-measure.lowerThird-25:not(.lowerThird-active),
.bio-target-measure.lowerThird-50:not(.lowerThird-active),
...

使用LESS或类似的更高级别的CSS可以轻松实现这一点：

.bio-target-measure {
    &.lowerThird-25, &.lowerThird-50, &.lowerThird-100 {
        &:not(.lowerThird-active) {
            opacity: 0 !important;
        }
    }
    /* define similar blocks for middleThird and upperThird */
}

上面将编译成第一个代码块中建议的复杂选择器，同时更容易阅读。

Answer 2

事实上，@ NietTheDarkAbsol回答的是-half-预期答案：我的选择器在CSS中无效（是的，在jQuery中）。

但是，重写逻辑还需要保留类关系。这意味着：

同时不满足以下4个条件的.bio-target-measure必须具有0的不透明度：

.lowerThird-（25 | 50 | 100）.lowerThird活性
.middleThird-（25 | 50 | 100）.middleThird活性
.upperThird-（25 | 50 | 100）.upperThird活性
.bud-（25 | 50 | 100）的.bud活性

当未设置相应-active过滤器的至少一个时，他的答案中的选择器产生0。由于每个标记可以使用多个-active过滤器，因此必须以默认为负的方式重写解决方案（即默认情况下不透明度为0，具有其他类时不为0）。 sass脚本是这样的：

.bio-target-measure {
  @each $lowerThird in 0, 25, 50, 100 {
    @each $middleThird in 0, 25, 50, 100 {
      @each $upperThird in 0, 25, 50, 100 {
        @each $bud in 0, 25, 50, 100 {
          $lowerThirdClass: '.lowerThird-#{$lowerThird}.lowerThird-active';
          $middleThirdClass: '.middleThird-#{$middleThird}.middleThird-active';
          $upperThirdClass: '.upperThird-#{$upperThird}.upperThird-active';
          $budClass: '.bud-#{$bud}.bud-active';

          @if $lowerThird == 0 { $lowerThirdClass: ''; }
          @if $middleThird == 0 { $middleThirdClass: ''; }
          @if $upperThird == 0 { $upperThirdClass: ''; }
          @if $bud == 0 { $budClass: ''; }

          $sum: $lowerThird + $middleThird + $upperThird + $bud;
          @if $sum > 50 {
            $sum: 100;
          }

          &#{$lowerThirdClass}#{$middleThirdClass}#{$upperThirdClass}#{$budClass} {
            opacity: $sum / 100;
          }
        }
      }
    }
  }
}

我的浏览器与我的CSS不匹配（但jQuery确实如此）

2 个答案: