21 Feb 2025

Key Takeaways HTML5 introduces a range of new input types and attributes for forms, including email, tel, url, search, number, range, date, datetime, datetime-local, month, week, time, and color, which provide native input assistance and validatio

07 Jun 2025

HTML5Microdata improves the semantics and SEO effects of web pages by adding specific attributes to HTML. 1) Use item scope and itemtype to define objects, and itemprop specifies properties, such as restaurant information. 2) Pay attention to using the correct vocabulary of Schema.org to avoid increasing file size affecting loading speed. 3) Use it on key elements and use tools to verify the correctness of the mark.

18 Feb 2025

Detailed explanation of HTML5 video and audio tags: Building a responsive video player This article is excerpted from the book "HTML5 & CSS3 for the Real World, 2nd Edition" co-authored by Alexis Goldstein, Louis Lazaris and Estelle Weyl. This book is available in major bookstores around the world, and you can also purchase the e-book version here. Core points HTML5's video and audio tags allow for embedded video and audio elements directly in HTML code, without the need for external plug-ins or players. HTML5 video and audio tags contain multiple attributes to control the behavior of these elements, such as autoplay

31 Jul 2025

The Schema.org tag helps search engines understand the structured data format of web page content through semantic tags (such as item scope, item type, itemprop); it can be used to define custom vocabulary, methods include extending existing types or using additionalType to introduce new types; in actual applications, keeping the structure clear, using official attributes first, testing code validity, and ensuring that custom types are accessible; precautions include accepting partial support, avoiding spelling errors, and choosing a suitable format such as JSON-LD.

03 Jul 2025

Using HTML5 semantic tags and Microdata can improve SEO because it helps search engines better understand page structure and content meaning. 1. Use HTML5 semantic tags such as,,,, and to clarify the function of page blocks, which helps search engines establish a more accurate page model; 2. Add Microdata structured data to mark specific content, such as article author, release date, product price, etc., so that search engines can identify information types and use them for display of rich media summary; 3. Pay attention to the correct use of tags to avoid confusion, avoid duplicate tags, test the effectiveness of structured data, regularly update to adapt to changes in schema.org, and combine with other SEO means to optimize for long-term.

04 Jul 2025

In HTML, do not use backquotes (`), but double quotes (") or single quotes (') to wrap attribute values. The difference is in context and syntax rules. 1. Double quotes are the most commonly used way to wrap HTML attribute values, especially when the attribute values ??contain single quotes to avoid escapes; 2. Single quotes can also be used to wrap attribute values, which are commonly found in JavaScript strings to avoid double quote escapes, or personal preferences; 3. Backquotes are only used for JavaScript template strings or Markdown code marks, and are not used in standard HTML syntax, so backquotes should not be wrapped in HTML files; 4. Regardless of which quotation marks are selected, the project should be consistent.