他们上网可能借助的是屏幕阅读器,也就是 screen reader(sr),屏幕阅读器需要找到能辨识的文本说明然后“读”出来给用户听。 问题是:一些元素,比如选中高亮状态无法读出。因此我们还要写上这些元素的文本说明,但是又不需要展示给普通用户看到,于是加上 sr-only 的意义就在于能保证屏幕阅读器正确读取且不会影响正常人的...
这个是隐藏的,sr-only是screen reader only的意思,盲人看的时候会把Toggle Navigation读出来。这个时候盲人就知道他在看的地方时一个响应式导航 5 回复 #1 Amy多多 提问者 非常感谢! 2016-06-24 回复 #2 慕粉3170703 回复 Amy多多 提问者 谢谢采纳,加油(^o^) 2016-07-11 回复 玩转Bootstrap(基础)...
在JavaScript中,判断一个<span>元素是否包含特定的class,可以使用多种方法。以下是一些常见的方法: 使用classList.contains() 这是最直接和推荐的方法,因为它简洁且易于理解。 代码语言:txt 复制 // 获取span元素 var spanElement = document.querySelector('span'); // 判断是否包含特定的class if (spanElement...
Casts a read-only span of TDerived to a read-only span of T. C# Копирај public static ReadOnlySpan<T> CastUp<TDerived> (ReadOnlySpan<TDerived> items) where TDerived : class, T; Type Parameters TDerived The element type of the source read-only span, which must be deri...
80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond A page can have only one ...
目前,在我的代码中,我分解了一个更大的汤,以获得所有的“td”标记与此代码: <span class="sr-only"> </span> < 浏览0提问于2020-07-04得票数 1 回答已采纳 2回答 用BS4 - Python排除span 、、 因此,我试图排除(而不是提取)包含在span中的信息。下面是HTML:这是我的密码: description_elements = ...
The popula tion consisted of college students enrolled in an undergraduate psychol ogy class in which they studied their own personalities. They had chosen to participate in classes with mandatory group attendance rather than a class where no group participation was required._■ Thus, it is...
The intra-class correlation coefficient based on 2-way mixed effects model for volume rendering of SAT and VAT for the same scan by different analysts are 0.99, and 0.95, respectively [18]. Statistical Methods Group data are presented as the mean ± SD for children (5–17 years) and ...
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1 回答<span class="sr-only">Toggle Navigation</span>这句话的意义 1 回答<span class="sr-only">Toggle Navigation</span>这句什么意思? 2 回答<span class='sr-only'>40% Complete</span> 1 回答<span class=&qu...