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How do you set the lang attribute on the tag? Why is this important?
How do you set the lang attribute on the tag? Why is this important?
Setting the lang attribute of the tag is a key step in optimizing web accessibility and SEO. 1) Set the lang attribute in the tag, such as . 2) In multilingual content, set lang attributes for different language parts, such as
. 3) Use language codes that comply with ISO 639-1 standards, such as "en", "fr", "zh", etc. Correctly setting the lang attribute can improve the accessibility of web pages and search engine rankings.
introduction
In website development, setting the lang attribute of the tag is a key step in optimizing web accessibility and search engine optimization. Today, we'll dive into how to properly set lang attribute and why it's so important to the web page. By reading this article, you will learn about the specific usage of lang attributes, its role in multilingual support and SEO, as well as some common misunderstandings and best practices.
Review of basic knowledge
In HTML, the tag is the root element of a web document, which is responsible for declaring the document type and providing basic structural information. lang attribute is used to specify the language of a web page. This statement not only helps the screen reader to correctly read the content, but also helps search engines better understand and index web page content.
For example, if your website is mainly for English-speaking users, you might set it up like this:
<html lang="en">
Core concept or function analysis
Definition and function of lang attribute
lang attribute is an attribute of the <html> tag that specifies the main language of the web page content. It helps browsers, screen readers, and other tools to correctly process and display content. For example, a screen reader can adjust the pronunciation and intonation of voice reading according to lang attributes to improve user experience.
A simple example:
<html lang="fr">
<head>
<title>Bienvenue sur notre site</title>
</head>
<body>
<h1 id="Bonjour-le-monde">Bonjour le monde!</h1>
</body>
</html> In this example, lang="fr" indicates that the web page is in French, which affects how the screen reads.
How it works
When a browser or screen reader parses a web page, they read lang attribute to determine the language of the content. Based on this information, the browser can select the appropriate font, adjust the text layout, or provide the correct pronunciation rules for the screen reader. In addition, search engines will also use this attribute to better understand web content, thereby improving the accuracy of search results.
In implementation, lang attribute follows the ISO 639-1 standard, a two-letter code system for identification languages. For example, en means English, fr means French, zh means Chinese, etc.
Example of usage
Basic usage
The most common usage is to set lang attribute directly in the <html> tag:
<html lang="en">