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Course Introduction：How to implement responsive image loading on different devices? Use HTML5's srcset and sizes properties. The specific methods are: 1. Prepare pictures of multiple sizes and mark the width with w units; 2. Define the viewport ratio of pictures under different screen widths in sizes, such as (max-width: 600px)100vw; 3. Pay attention to setting DPR high-definition adaptation, such as 1x/2x descriptor; 4. Always keep src as a compatibility solution; 5. Plan the image size according to the device breakpoint, such as 480px/768px/1024px, etc.; 6. Test the loading effect of each size through the developer tool. This ensures that the browser accurately selects the best picture, taking into account loading speed and display quality.

2025-07-05 comment 0  437

Course Introduction：The key to making a responsive website lies in the reasonable cooperation between HTML5 and CSS3, and the core is to make web pages display well on different devices. 1. Use HTML5 semantic tags to build clear structures, such as, , etc., to make the code easier to read and facilitate search engine crawling; 2. Use CSS3 media query to achieve multi-device adaptation, and apply different rules by detecting screen width, such as setting breakpoints such as mobile phones and tablets; 3. Use elastic layout (Flexbox or Grid) to deal with alignment and arrangement issues, and ensure that the navigation bar and other content automatically adapt to the screen; 4. Set image adaptation, use max-width:100% and srcset attributes to ensure that the image does not destroy the layout and improve the loading effect. Mastering these four key points can achieve compatibility with multiple settings

2025-07-13 comment 0  498

Course Introduction：Elements are a native way to implement responsive images in HTML5. It allows the most appropriate image resources to be loaded according to factors such as the screen size, resolution, and direction of the device. Define multiple image sources and their corresponding media query conditions through tags. The browser will match and load pictures that meet the conditions in order, and finally use the tag as the default fallback. For example: when the device width is greater than or equal to 1024px, medium.jpg is loaded between 768 and 1023px, small.jpg is loaded if the device width is greater than or equal to 1024px. Compared with srcset, it provides more refined control capabilities, such as adapting to Retina screens, horizontal and vertical screen switching, completely different picture content, etc. Media checks should be set reasonably when using

2025-07-10 comment 0  451

Course Introduction：Media query is a CSS feature that allows different styles to be applied according to the screen size, resolution, or direction of the device, thereby enabling responsive web design. Its core function is to optimize the layout display effect on different devices through condition judgment. For example, hide the menu to fit the mobile device when the screen width is less than 768px. It helps developers adjust layout structure, font size, element visibility and image switching without modifying HTML. Typical application scenarios include adaptation of mobile phones (480px), tablets (768px), and desktop devices (1024px or 1200px). It is recommended to adopt a mobile-first strategy and flexibly set breakpoints in combination with content needs. When using it, you need to pay attention to testing the actual screen width and reasonably matching min-widt

2025-06-17 comment 0  278

Course Introduction：SqlParameter Parameters.Add vs. AddWithValue: Choosing the Best MethodWhen working with SQL commands, you may encounter the need to add...

2025-01-10 comment 0  674

Course Elementary  13779

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  82293

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  13148

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  24595

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  27455

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.