search
HomeWeb Front-endHTML TutorialDetailed explanation of the difference between similar tags and attributes in HTML

In this chapter, we will give you a detailed explanation of the differences between similar tags and attributes in HTML. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

【1】 is the same as tag

: both indicate italics.

Difference:

(1) indicates the content that is emphasized, is physically italicized and has no content meaning.

(2) The tag is a tag that "contains semantics", and search engines will understand these semantics. It is specifically set to mean "emphasis" in HTML. When discovering these "emphasis" tags, some screen readers may use a different inflection, which is more beneficial to SEO.

【2】
and

tags

are the same: they both have line break attributes.

Difference:
used alone; performs small line breaks.

 

Use in pairs; perform large line breaks between paragraphs.

【3】 and tags

are logical tags that strengthen the tone of the characters and express emphasis. The specific performance of strong can also be changed through css.

is an entity tag, which means bold.

In order to comply with the current W3C standards, it is recommended to use the strong tag.

【4】 and

tags

are the same: container tags and are widely used in html language. If you replace "

" with "", after execution, you will find that the effect is exactly the same. Both of them function to separate each block independently.

Difference: is a line element and will not wrap before and after it;

and

is a block-level element and the elements it surrounds will automatically wrap. One div occupies one line.

【5】valign and align attributes

valign: represents the vertical alignment of the row [top, center/mmiddle, bottom]

align: represents the horizontal alignment Its [left center/middle right]

[6] center and middle attributes

align=middle usually centers the picture

align=center usually centers the text

Can be used when the effect is the same

Usually use center, middle may not work in IE

[7]

tags is The content of the button, which includes any acceptable body content, such as text or multimedia content.

The only prohibited element is image mapping.

Always specify the type attribute for buttons.

The default type in Internet Explorer is "button", while the default in other browsers (including the W3C specification) is "submit".

【8】text-align:center and

not only affect the text, but also center the entire element.

text-align does not control the alignment of elements, but only affects the internal content. The

element itself will not move from one end to the other, only the text within it will be affected.

【9】letter-spacing and word-spacing

letter-spacing refers to the spacing of letters;

word-spacing refers to the spacing of words.

Chinese generally uses letter-spacing to control character spacing

Word-spacing does not work for Chinese


The above is the detailed content of Detailed explanation of the difference between similar tags and attributes in HTML. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
The Future of HTML, CSS, and JavaScript: Web Development TrendsThe Future of HTML, CSS, and JavaScript: Web Development TrendsApr 19, 2025 am 12:02 AM

The future trends of HTML are semantics and web components, the future trends of CSS are CSS-in-JS and CSSHoudini, and the future trends of JavaScript are WebAssembly and Serverless. 1. HTML semantics improve accessibility and SEO effects, and Web components improve development efficiency, but attention should be paid to browser compatibility. 2. CSS-in-JS enhances style management flexibility but may increase file size. CSSHoudini allows direct operation of CSS rendering. 3.WebAssembly optimizes browser application performance but has a steep learning curve, and Serverless simplifies development but requires optimization of cold start problems.

HTML: The Structure, CSS: The Style, JavaScript: The BehaviorHTML: The Structure, CSS: The Style, JavaScript: The BehaviorApr 18, 2025 am 12:09 AM

The roles of HTML, CSS and JavaScript in web development are: 1. HTML defines the web page structure, 2. CSS controls the web page style, and 3. JavaScript adds dynamic behavior. Together, they build the framework, aesthetics and interactivity of modern websites.

The Future of HTML: Evolution and Trends in Web DesignThe Future of HTML: Evolution and Trends in Web DesignApr 17, 2025 am 12:12 AM

The future of HTML is full of infinite possibilities. 1) New features and standards will include more semantic tags and the popularity of WebComponents. 2) The web design trend will continue to develop towards responsive and accessible design. 3) Performance optimization will improve the user experience through responsive image loading and lazy loading technologies.

HTML vs. CSS vs. JavaScript: A Comparative OverviewHTML vs. CSS vs. JavaScript: A Comparative OverviewApr 16, 2025 am 12:04 AM

The roles of HTML, CSS and JavaScript in web development are: HTML is responsible for content structure, CSS is responsible for style, and JavaScript is responsible for dynamic behavior. 1. HTML defines the web page structure and content through tags to ensure semantics. 2. CSS controls the web page style through selectors and attributes to make it beautiful and easy to read. 3. JavaScript controls web page behavior through scripts to achieve dynamic and interactive functions.

HTML: Is It a Programming Language or Something Else?HTML: Is It a Programming Language or Something Else?Apr 15, 2025 am 12:13 AM

HTMLisnotaprogramminglanguage;itisamarkuplanguage.1)HTMLstructuresandformatswebcontentusingtags.2)ItworkswithCSSforstylingandJavaScriptforinteractivity,enhancingwebdevelopment.

HTML: Building the Structure of Web PagesHTML: Building the Structure of Web PagesApr 14, 2025 am 12:14 AM

HTML is the cornerstone of building web page structure. 1. HTML defines the content structure and semantics, and uses, etc. tags. 2. Provide semantic markers, such as, etc., to improve SEO effect. 3. To realize user interaction through tags, pay attention to form verification. 4. Use advanced elements such as, combined with JavaScript to achieve dynamic effects. 5. Common errors include unclosed labels and unquoted attribute values, and verification tools are required. 6. Optimization strategies include reducing HTTP requests, compressing HTML, using semantic tags, etc.

From Text to Websites: The Power of HTMLFrom Text to Websites: The Power of HTMLApr 13, 2025 am 12:07 AM

HTML is a language used to build web pages, defining web page structure and content through tags and attributes. 1) HTML organizes document structure through tags, such as,. 2) The browser parses HTML to build the DOM and renders the web page. 3) New features of HTML5, such as, enhance multimedia functions. 4) Common errors include unclosed labels and unquoted attribute values. 5) Optimization suggestions include using semantic tags and reducing file size.

Understanding HTML, CSS, and JavaScript: A Beginner's GuideUnderstanding HTML, CSS, and JavaScript: A Beginner's GuideApr 12, 2025 am 12:02 AM

WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.