Course Introduction：The key to debugging HTML code is to master several core functions of ChromeDevTools. 1. Check the element structure: quickly locate the HTML position by right-clicking "Check", expand the node to view the nested structure, and double-click modifying content for temporary testing; 2. View and modify styles: View the applied CSS rules on the right side of the Elements panel, disable a certain style to observe the impact, or add a new style to test the effect; 3. Use the console to operate the DOM and execute JS, such as obtaining elements, modifying content, and testing whether the button event takes effect; 4. Responsive design debugging: Use the device toolbar to simulate different screen sizes, and comprehensively analyze layout problems in combination with the box model display and the Computed style panel.
2025-07-11 comment 0 1012
Course Introduction：To make the form more beautiful and improve the user experience, you can optimize it from the following four points: 1. Unify the basic style of the input box and add: focus effect; 2. Hide native check boxes and radio buttons and replace them with custom icons; 3. Set hover, active status and animation for the submission button; 4. Keep the form layout neatly and aligned, and use .form-group to uniform spacing.
2025-07-10 comment 0 567
Course Introduction：The Reachability feature of the iPhone can be enabled via settings and used for one-handed operation. 1. Turn on: Go to "Settings" → "Assisted Functions" → "Touch" → "Reachability" and turn on the switch; 2. Use: Tap the home button twice for iPhone with home button, and tap the bottom edge of the screen twice for full-screen iPhone; 3. Applicable scenarios: convenient to click on the top button, close pop-up windows or notification bar quick settings, etc.; 4. Frequently asked questions: If it does not take effect, check whether it is turned on, avoid accidentally touching, or confirm whether the double-click position is at the bottom edge. This function is simple and practical, and can effectively improve operational convenience.
2025-07-19 comment 0 806
Course Introduction：Quick boot is a hybrid shutdown feature of Windows 10 that speeds up booting by saving kernel status to the hard disk, but may cause problems when dual systems, hardware recognition or driver updates. To check whether it is enabled, you can go to the control panel → Power Options → "Select the function of power off button" to check whether "Enable Quick Start" is checked; if it cannot be operated, administrator permission is required or the command powercfg-hoff is disabled; it is recommended to turn off when using dual systems, frequently changing hardware, external devices to recognize abnormalities, or debugging the startup process, ordinary users can maintain the default settings without special needs.
2025-07-21 comment 0 534
Course Introduction：RPOPLPUSH is a command in Redis to safely and atomically move elements from one list to another. 1. It pops up elements from the tail of the source list and pushes them to the head of the target list; 2. The entire operation is atomic to avoid data inconsistency caused by competition between multiple clients; 3. It is often used in scenarios such as task queues and message processing that need to ensure data consistency; 4. If the source list is empty or does not exist, return nil; 5. When the source and the target are in the same list, it realizes the loop rotation effect; 6. When actual use, check the return value and combine it with transaction or blocking variant optimization logic.
2025-08-03 comment 0 683
Course Elementary 13824
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 82359
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 13178
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 24628
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 27486
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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