下划线和其他符号可能无法被爬虫识别。
Underscores and other symbols may not be recognized the same way.
另外,考虑一下使用连字符号替换下划线,微格式( Microformats )将连字符号作为标准的分割符号,不过某些特定的老版本浏览器在处理上可能有问题.你可以阅读一下 Underscores inclassand IDNames (类和ID中的下划线)这边文章来了解更多信息.
Microformats use hyphens as a standard separator, and certain older browsers have a hard time with them. You can read more about this at Underscores in class and ID Names.
如果$字符后面不跟着一个左括号，字母或者一个下划线，$符号在文本字面值中就不会有麻烦。
If the $ character is not followed by a left brace, letter, or an underscore, the $ character remains unmolested in the text literal.
下划线划在符号，词或词组下的线，用以表示强调或斜体打印。
A line under something, such as a symbol, word, or phrase, used to indicate emphasis or italic type.
段落样式；字体名称；字号；字体颜色；加粗；倾斜；下划线；左对齐；居中对齐；右对齐；项目符号；编号列表；减少缩进量；增加缩进量。
Paragraph Styles; Font Names; Font Size; Font Color; Bold ; Italic; Underline; Align Left; Center; Align Right; Bullets; Numbered List; Decrease Indent; Increase Indent.
和符号应用于名称中和符号旁边的字符，使得在显示菜单项时该字符有下划线。
The ampersand applies to the next character in the name and causes the character to be underlined when the menu item is displayed.
映射文件中的全局符号通常有一个或多个前导下划线，因为编译器向变量名添加前导下划线。
Global symbols in a mapfile usually have one or more leading underscores because the compiler adds a leading underscore to variable names.
任何字母、十进制的数字或标点符号连接器如下划线的单词字符。
A word character is any letter, decimal digit, or punctuation connector such as an underscore.
任何字母、十进制的数字或标点符号连接器如下划线的单词字符。
A word character is any letter, decimal digit, or punctuation connector such as an underscore.
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