In HTML/CSS, tt is a web page tag used to define typewriter text. The syntax is "text"; the tt tag is marked Text appears like a typewriter or monospaced. Note that HTML5 no longer supports the tt tag. Although some browsers still support it, please try not to use this feature and update existing code. This feature may not work properly at any time.
The operating environment of this tutorial: Windows 7 system, CSS3&&HTML5 version, Dell G3 computer.
#What is tt in html/css
In html/css, tt is a web page tag used to define typewriter text. The text marked with the tag has a typewriter or monospaced effect.
Format:
<tt>文本</tt>
Note: HTML5 no longer supports the tag.
DEPRECATED: This feature is no longer recommended. While some browsers still support it, it may have been removed from the relevant web standard, may be in the process of being removed, or may be retained for compatibility reasons. Please try not to use this feature and update existing code; see the compatibility table at the bottom of this page to guide your decision. Please note that this feature may not work properly at any time.
Standard attributes of tags
Attributes | Value | Description |
---|---|---|
classname | Specifies the class name of the element||
rtl |
ltr | Specifies the text direction of the content in the element|
id | Specifies the uniqueness of the element id||
language_code | Specifies the language code of the content in the element | |
style_definition | Specifies the inline style of the element | |
text | Specifies additional information for the element | |
language_code | Specifies XHTML The language code for the content in the document element |
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>html< tt>标签笔记</title>
</head>
<body>
<table border="1">
<p>这是普通的文本</p>
<p><tt>这是tt标签标记的文本</tt></p>
</body>
</html>
In HTML 4.01, the tag supports the following event attributes:
Value | Description | |
---|---|---|
script | Execute script when mouse is clicked | |
#script | Execute script when the mouse is double-clicked | |
script | Execute script when mouse button is pressed | |
script | Execute script when the mouse pointer moves | |
script | When Execute the script when the mouse pointer moves out of an element | |
script | When the mouse pointer hovers over an element Execute script when | |
script | Execute script when mouse button is released | |
script | Execute script when the keyboard is pressed | |
script | Execute script when the keyboard is pressed and then released | |
script | Execute the script when the keyboard is released |
The above is the detailed content of What is tt in html/css. For more information, please follow other related articles on the PHP Chinese website!

TonavigateReact'scomplexecosystemeffectively,understandthetoolsandlibraries,recognizetheirstrengthsandweaknesses,andintegratethemtoenhancedevelopment.StartwithcoreReactconceptsanduseState,thengraduallyintroducemorecomplexsolutionslikeReduxorMobXasnee

Reactuseskeystoefficientlyidentifylistitemsbyprovidingastableidentitytoeachelement.1)KeysallowReacttotrackchangesinlistswithoutre-renderingtheentirelist.2)Chooseuniqueandstablekeys,avoidingarrayindices.3)Correctkeyusagesignificantlyimprovesperformanc

KeysinReactarecrucialforoptimizingtherenderingprocessandmanagingdynamiclistseffectively.Tospotandfixkey-relatedissues:1)Adduniquekeystolistitemstoavoidwarningsandperformanceissues,2)Useuniqueidentifiersfromdatainsteadofindicesforstablekeys,3)Ensureke

React's one-way data binding ensures that data flows from the parent component to the child component. 1) The data flows to a single, and the changes in the state of the parent component can be passed to the child component, but the child component cannot directly affect the state of the parent component. 2) This method improves the predictability of data flows and simplifies debugging and testing. 3) By using controlled components and context, user interaction and inter-component communication can be handled while maintaining a one-way data stream.

KeysinReactarecrucialforefficientDOMupdatesandreconciliation.1)Choosestable,unique,andmeaningfulkeys,likeitemIDs.2)Fornestedlists,useuniquekeysateachlevel.3)Avoidusingarrayindicesorgeneratingkeysdynamicallytopreventperformanceissues.

useState()iscrucialforoptimizingReactappperformanceduetoitsimpactonre-rendersandupdates.Tooptimize:1)UseuseCallbacktomemoizefunctionsandpreventunnecessaryre-renders.2)EmployuseMemoforcachingexpensivecomputations.3)Breakstateintosmallervariablesformor

Use Context and useState to share states because they simplify state management in large React applications. 1) Reduce propdrilling, 2) The code is clearer, 3) It is easier to manage global state. However, pay attention to performance overhead and debugging complexity. The rational use of Context and optimization technology can improve the efficiency and maintainability of the application.

Using incorrect keys can cause performance issues and unexpected behavior in React applications. 1) The key is a unique identifier of the list item, helping React update the virtual DOM efficiently. 2) Using the same or non-unique key will cause list items to be reordered and component states to be lost. 3) Using stable and unique identifiers as keys can optimize performance and avoid full re-rendering. 4) Use tools such as ESLint to verify the correctness of the key. Proper use of keys ensures efficient and reliable React applications.


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

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),

WebStorm Mac version
Useful JavaScript development tools

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

Notepad++7.3.1
Easy-to-use and free code editor

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft
