这里有些棘手的情况,我有以下课程:

<li><a href="test.html" class="hvr-overline-from-left">Test</a></li>


这是它的CSS:

.hvr-overline-from-left {
  display: inline-block;
  vertical-align: middle;
  box-shadow: 0 0 1px transparent;
  position: relative;
  overflow: hidden;
}
.hvr-overline-from-left:before {
  content: "";
  position: absolute;
  z-index: -1;
  left: 0;
  right: 100%;
  top: 0%;
  background: #47953F;
  height: 4px;
  -webkit-transition-property: right;
  transition-property: right;
  -webkit-transition-duration: 0.3s;
  transition-duration: 0.3s;
  -webkit-transition-timing-function: ease-out;
  transition-timing-function: ease-out;
}


向下滚动时应更改以下内容:

.hvr-overline-from-leftsmall:before {
  content: "";
  position: absolute;
  z-index: -1;
  left: 0;
  right: 100%;
  top: 15%;
  background: #47953F;
  height: 4px;
  -webkit-transition-property: right;
  transition-property: right;
  -webkit-transition-duration: 0.3s;
  transition-duration: 0.3s;
  -webkit-transition-timing-function: ease-out;
  transition-timing-function: ease-out;
}


这是我尝试的:

$(document).ready(function($){
    var line = $('.hvr-overline-from-left:before');

    $(window).scroll(function () {
        if ($(this).scrollTop() > 13.35) {
            line.addClass("hvr-overline-from-leftsmall:before");
        } else if($(this).scrollTop() >= 0) {
            line.removeClass("hvr-overline-from-leftsmall:before");
        }
    });
});


当然这是行不通的,我的问题是如何使此工作正常进行?我不知道应该更改哪个类来更改伪元素。

最佳答案

您只需添加类hvr-overline-from-leftsmall,而无需:before选择器;例如。:

line.addClass("hvr-overline-from-leftsmall");
// No :before here -----------------------^


(当然,以后的removeClass也一样。)

只要是在hvr-overline-from-left类规则之后定义的,它将在所有样式冲突中优先。

:before是规则选择器而不是类的一部分。

10-06 07:33