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Course Introduction：Use jQuery to detect whether there is a horizontal scrollbar in an element hasHScrollBar() (and the vertical scrollbar detection function). jQuery hasHScrollBar() function // Utility function to check whether the element has scroll bars jQuery.fn.hasScrollBar = function(direction) { if (direction === 'vertical') { return this.get(0).scrollHeight > this.innerHeight();

2025-02-27 comment 0  658

Course Introduction：The common breakpoint settings in responsive design are as follows: 1. The vertical screen of the mobile phone (0~767px) adopts a single-column layout, uses max-width:767px media query, optimizes touch operation and content priority; 2. The tablet and small-screen devices (768px~1023px) can introduce two-column layouts, uses min-width:768px and max-width:1023px media query, supports horizontal and vertical screen switching; 3. The desktop devices (1024px and above) use min-width:1024px media query, supports multi-column layout and high-definition image sources; 4. Other supplements include separate processing of mobile horizontal screens, large-screen optimization, focusing on viewport size rather than pixel ratio, and flexible use units. Really good

2025-06-29 comment 0  282

Course Introduction：Over time, the display has become wider, providing greater space and higher resolution for video and games. The horizontal setting screen may be natural for you – it shows up on the box anyway – but it may not be the most effective option when you work. Switching to a vertical display setup is easy and makes use of every inch of the screen more efficiently. When you use programs like Microsoft Word or Google Docs, or view traditional scrolling down web pages, a larger screen can only do so much for you. It will reach a point, having more space just means more space between the columns, or a larger gray area between the document you are working on and the scrollbar to the right. Vertical display

2025-02-24 comment 0  507

Course Introduction：The key to cross-platform H5 mobile applications is compatibility and performance optimization. 1. Choose a suitable development framework, such as Vue is suitable for small and medium-sized projects, React is more suitable for large projects, combined with Cordova or Capacitor to achieve a native experience; 2. Use flex rem, vw/vh or PostCSS plug-ins to solve adaptation problems, and deal with common problems such as high-definition screen borders, content overflow and horizontal and vertical screen switching; 3. Performance optimization includes image compression, CDN acceleration, caching strategy, reducing DOM operations and HTTP requests, and evaluate the optimization effect through Lighthouse tools; 4. Use fastclick, Modernizr and other tool libraries to handle platform differences, the same

2025-07-16 comment 0  402

Course Introduction：To open Safari's responsive design mode, you must first open the "Development" menu: go to "Preferences" → "Advanced" → check "Show the "Development" menu in the menu bar", then click the "Development" menu and select "Enter Responsive Design Mode", or use the shortcut key Command Option R; common uses include dragging the edge to adjust the viewport size, selecting preset device size, switching horizontal and vertical screens, enabling touch simulation, and viewing the current viewport width and height; during debugging, you can combine the element inspector and network panel to edit the DOM and style in real time, and monitor resource loading; Notes include that this mode only simulates the viewport size, does not support certain mobile APIs, some dynamic loading resources may not be loaded immediately, and only the macOS version supports

2025-07-18 comment 0  352

Course Elementary  13787

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  82307

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  13154

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  24601

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  27461

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.