Web Front-endHTML TutorialWhat are the differences between html5 and html? Summary of the four major differences between html5 and htmlWhat are the differences between html5 and html? Summary of the four major differences between html5 and html
What is the difference between html and html5? I believe many friends have this question, so the following article on php Chinese website will give you a detailed introduction to the difference between html5 and html, so that you can understand it at a glance.
1. First, let us take a look at what is html? What is html5?
1. What is html?
According to the definition of W3C, we can know that html refers to hypertext markup language. It is not a programming language, but a language that uses markup tags to describe web pages.
Here is just a brief introduction to the definition of html. If you want to know more about html, you can read this article: What is html? I think the article is interesting. If you are not satisfied, you can go to the php Chinese website html video tutorial column to learn.
2. What is html5?
From Baidu Encyclopedia, we can know that html5 is the fifth major modification of Hypertext Markup Language (HTML), an application under the Standard Universal Markup Language, the core language of the World Wide Web. This is just a simple definition, so if you want to know more about what html5 is? You can take a look at this article: What is H5? You can fully understand what an html5 page is in 5 minutes.
Of course, you can also go to the html5 video tutorial column of the php Chinese website to learn courses.
After reading the brief introduction of html5 and html, let’s get to the point and talk about the difference between html5 and html.
2. What are the differences between html5 and html?
The difference between html5 and html 1: The difference between document declarations
html：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml">
html5：
<!DOCTYPE html>
As can be seen from the above, in the document declaration, html has a long section of code, which is not easy to remember, but html5 is different. It only has a simple declaration, which is also convenient for people to remember.
The difference between html5 and html 2: structural semantics
There is no structural semantic tag in html, we usually name it like this
html5 deletes some outdated tags and adds some new semantic tags on the basis of html, such as:
The above is the detailed content of What are the differences between html5 and html? Summary of the four major differences between html5 and html. For more information, please follow other related articles on the PHP Chinese website!
The Future of HTML: Evolution and TrendsMay 13, 2025 am 12:01 AMThe future of HTML will develop in a more semantic, functional and modular direction. 1) Semanticization will make the tag describe the content more clearly, improving SEO and barrier-free access. 2) Functionalization will introduce new elements and attributes to meet user needs. 3) Modularity will support component development and improve code reusability.
Why are HTML attributes important for web development?May 12, 2025 am 12:01 AMHTMLattributesarecrucialinwebdevelopmentforcontrollingbehavior,appearance,andfunctionality.Theyenhanceinteractivity,accessibility,andSEO.Forexample,thesrcattributeintagsimpactsSEO,whileonclickintagsaddsinteractivity.Touseattributeseffectively:1)Usese
What is the purpose of the alt attribute? Why is it important?May 11, 2025 am 12:01 AMThe alt attribute is an important part of the tag in HTML and is used to provide alternative text for images. 1. When the image cannot be loaded, the text in the alt attribute will be displayed to improve the user experience. 2. Screen readers use the alt attribute to help visually impaired users understand the content of the picture. 3. Search engines index text in the alt attribute to improve the SEO ranking of web pages.
HTML, CSS, and JavaScript: Examples and Practical ApplicationsMay 09, 2025 am 12:01 AMThe roles of HTML, CSS and JavaScript in web development are: 1. HTML is used to build web page structure; 2. CSS is used to beautify the appearance of web pages; 3. JavaScript is used to achieve dynamic interaction. Through tags, styles and scripts, these three together build the core functions of modern web pages.
How do you set the lang attribute on the tag? Why is this important?May 08, 2025 am 12:03 AMSetting the lang attributes of a 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 ISO639-1 standards, such as "en", "fr", "zh", etc. Correctly setting the lang attribute can improve the accessibility of web pages and search engine rankings.
What is the purpose of HTML attributes?May 07, 2025 am 12:01 AMHTMLattributesareessentialforenhancingwebelements'functionalityandappearance.Theyaddinformationtodefinebehavior,appearance,andinteraction,makingwebsitesinteractive,responsive,andvisuallyappealing.Attributeslikesrc,href,class,type,anddisabledtransform
How do you create a list in HTML?May 06, 2025 am 12:01 AMTocreatealistinHTML,useforunorderedlistsandfororderedlists:1)Forunorderedlists,wrapitemsinanduseforeachitem,renderingasabulletedlist.2)Fororderedlists,useandfornumberedlists,customizablewiththetypeattributefordifferentnumberingstyles.
HTML in Action: Examples of Website StructureMay 05, 2025 am 12:03 AMHTML is used to build websites with clear structure. 1) Use tags such as, and define the website structure. 2) Examples show the structure of blogs and e-commerce websites. 3) Avoid common mistakes such as incorrect label nesting. 4) Optimize performance by reducing HTTP requests and using semantic tags.
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Dreamweaver CS6
Visual web development tools
WebStorm Mac version
Useful JavaScript development tools
PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
