Course Introduction：The tab-size attribute is used to control the number of spaces displayed by tab characters in HTML. The default is 8. The common usage is to adjust the indentation of the code block. 1. Basic usage: Set pre{tab-size:4;} to make the tab appear as 4 space widths, supporting numbers or inherit values. 2. Usage scenario: When displaying code in the structure, adjust the tab indent to make the layout more compact and beautiful, such as setting precode{tab-size:2;}. 3. Notes: Mainstream browsers support but IE is incompatible; it only affects tab display and does not affect spaces; child elements need to be set separately, otherwise the parent settings will not be inherited. The rational use of this attribute can improve the text display effect, especially for code document typesetting.
2025-07-18 comment 0 710
Course Introduction：There are three ways to quickly indent multiple lines of code in VSCode: First, use Tab and Shift Tab, press Tab to indent right after multiple lines, and press Shift Tab to indent left; Second, use Ctrl ] and Ctrl [ to achieve right and left respectively; Third, customize shortcut keys, open keyboard shortcut settings through the command panel, search indent or outdent and modify it to your favorite shortcut keys; In addition, you can quickly select the entire code block through Ctrl Shift \ and indent it to improve efficiency.
2025-07-19 comment 0 853
Course Introduction：This article discusses customizing tab background colors in Shiny tabPanels. It provides an example showing how to set default tab colors and select specific colors for individual tabs. The customization involves modifying the CSS code to control the
2024-10-24 comment 0 793
Course Introduction：JavaScript: Opening Links in a New Window/Tab Using 'location.href'This article addresses the issue of opening links in a new window or tab using JavaScript. The discussion centers around modifying third-party JavaScript code to achieve this function
2024-10-21 comment 0 454
Course Introduction：Browser/Tab Activity Detection [Duplicate]In the realm of JavaScript, it's often desirable to only execute code when the current page is actively...
2024-12-04 comment 0 427
Course Elementary 13776
Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.
Course Elementary 82285
Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).
Course Elementary 13145
Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.
Course Elementary 24591
Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.
Course Elementary 27450
Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.
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