CSS:在对内容中的字符进行编码之后
我正在使用以下 CSS，它似乎可以正常工作:
I am using the following CSS, which seems to be working:
a.up:after{content: " ↓";}
a.down:after{content: " ↑";}
然而，这些字符似乎不能像这样编码，因为输出是文字并显示了实际的字符串:
The characters however cannot seem to be encoded like this, as the output is literal and shows the actual string:
a.up:after{content: " ↓";}
a.down:after{content: " ↑";}
如果我不能对其进行编码，我觉得我应该在 jQuery 中使用诸如 .append() 之类的东西，因为它支持编码.有什么想法吗?
If I can't encode it, it feels like I should use something such as .append() in jQuery, as that supports the encoding. Any ideas?
推荐答案
要在 content 中使用编码的 Unicode 字符，您需要提供字符本身(如您所做的那样)或它们的 UTF-8转义序列而不是 HTML 实体:
To use encoded Unicode characters in content you need to provide either the characters themselves (as you do), or their UTF-8 escape sequences instead of HTML entities:
a.up:after { content: " 2193"; }
a.down:after { content: " 2191"; }
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