


How to select an element based on its language with the :lang() pseudo-class?
Jun 25, 2025 am 12:41 AM
:lang()
pseudo-class in CSS.
<p> It allows you to match specific elements based on the document language (specified by lang
attribute), rather than judged by the content itself or the class name.
Basic writing method: :lang(語言代碼)
<p> The basic syntax of :lang()
is:element:lang(lang-code) { /* Style rules*/ }<p>
lang-code
here is a standard language tag, such as en
means English, zh
means Chinese, and fr
means French. These tags are usually set on HTML elements through the lang
attribute.<p> For example:<p lang="zh">This is a Chinese paragraph</p> <p lang="en">This is an English paragraph.</p><p> Corresponding CSS:
p:lang(zh) { background-color: yellow; }<p> In this way, only the
<p>
element with lang="zh"
set will be selected and a yellow background is applied.Practical application scenario: Style differences in multilingual websites
<p> In multilingual websites, text in different languages ??may have different typesetting needs. For example, Chinese characters do not require hyphenation, but English may require it. Using:lang()
can easily set different style rules for different languages.<p> For example::lang(en) { hyphens: auto; } :lang(zh) { font-family: "Microsoft YaHei", sans-serif; }<p> This will automatically apply appropriate font-breaking strategies and font settings according to different languages.
Notes and details
- Inheritance behavior :
:lang()
matches the element's ownlang
attribute, and will not affect the child elements just because the parent element has the language set. - Language tag support : Browsers usually support two-letter language codes of ISO 639-1 (such as
en
,es
,ja
), and more specific variants can also be used, such asen-US
orzh-TW
. - HTML must set the lang attribute correctly : If
lang
is not correctly declared in HTML,:lang()
will not work. - Not based on content recognition :
:lang()
will not automatically recognize the language of text content, and it depends entirely onlang
attribute on HTML.
Summarize how to use it
- Make sure that HTML elements have the correct
lang
attributes - Use
:lang(語言代碼)
to match elements of the corresponding language - Differentiated style control applied to multilingual scenarios
The above is the detailed content of How to select an element based on its language with the :lang() pseudo-class?. For more information, please follow other related articles on the PHP Chinese website!

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