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  • How to prevent Cumulative Layout Shift (CLS) with CSS?
    How to prevent Cumulative Layout Shift (CLS) with CSS?
    To reduce cumulative layout offset (CLS), space must be reserved for page elements in advance and dynamic layout changes must be avoided: 1. Set width and height for pictures and videos or use the aspect-ratio attribute to reserve space; 2. Avoid inserting elements above existing content, and use fixed positioning or pre-leave blanks; 3. Ensure stable font loading through @font-face's font-display and font metric overlay; 4. Clearly set the size for advertisements, embedded content, and iframes and use responsive aspect ratio containers; 5. Animation prioritizes properties such as transform and opacity that do not trigger rearrangement; 6. Reserve placeholders or minimum height containers for content dynamically loaded by JavaScript. Anyway,
    CSS Tutorial . Web Front-end 890 2025-07-27 03:59:10
  • HTML `enterkeyhint` Attribute for Virtual Keyboards
    HTML `enterkeyhint` Attribute for Virtual Keyboards
    enterkeyhint is an attribute in HTML that controls the text prompted by the virtual keyboard "Enter" key. It improves the mobile user experience by setting text such as "Complete" and "Search". Common values include: "enter" (default), "done" (end input), "go" (jump), "next" (next), "search" (trigger search), "send" (send message), etc. It is necessary to pay attention to its compatibility when using it. It is recommended to combine JavaScript to listen to carriage return events to achieve functions.
    HTML Tutorial . Web Front-end 466 2025-07-27 03:57:52
  • Clean Code Chronicles: Refactoring Complex `echo` Statements
    Clean Code Chronicles: Refactoring Complex `echo` Statements
    To solve the problem of complex echo statements, logic must be extracted first and then gradually refactored; 1. Preprocess and separate the conditions and variables; 2. Use heredoc or nowdoc to improve the readability of multi-line output; 3. Encapsulate the rendering logic into a reusable and testable function; 4. Use template engines such as Twig to achieve the complete separation of views and logic in large applications; 5. Avoid using echo directly in modern PHP applications, and instead return structured data or rendering through view layers; ultimately, make the code safer, clearer and easier to maintain.
    PHP Tutorial . Backend Development 376 2025-07-27 03:57:10
  • What is a stacking context?
    What is a stacking context?
    Astackingcontextisaself-containedlayerinCSSthatcontrolsthez-orderofoverlappingelements,wherenestedcontextsrestrictz-indexinteractions;itiscreatedbypropertieslikez-indexonpositionedelements,opacity
    CSS Tutorial . Web Front-end 354 2025-07-27 03:55:20
  • How to define a term with ?
    How to define a term with ?
    When defining a term with an element, it must be wrapped around the defined term and ensure that the definition is nearby; 2. Optionally add a title attribute to enhance clarity, especially for abbreviation or technical terms; 3. It can be used in combination with/in the description list, suitable for glossary or technical documents; 4. Best practices include only when the term first appears, always with clear and adjacent definitions, and can be combined with abbreviation. Although the element has no style by default, it can improve semantics, benefit SEO and screen readers, and ultimately, just mark the term and make sure it is well defined and close.
    HTML Tutorial . Web Front-end 430 2025-07-27 03:53:42
  • What are , , and in a table?
    What are , , and in a table?
    ItlookslikeyourquestiongotcutofformixedupintheHTMLformatting,butIcanhelpclarifywhat,,andmeaninanHTMLtable.Here’saclearbreakdown:—TableRowThistagdefinesatablerow.Everyrowinatablestartswithandendswith.You
    HTML Tutorial . Web Front-end 681 2025-07-27 03:51:32
  • How to pre-fill an HTML input field?
    How to pre-fill an HTML input field?
    Usethevalueattributetopre-fillanHTMLinputfield,whichsetstheinitialdisplayedandsubmittedvalue,suchas.2.Fordynamicdata,injectvaluesserver-side(e.g.,PHPwith)orclient-sideusingJavaScriptlikedocument.getElementById('myInput').value='Pre-filledtext';aftert
    HTML Tutorial . Web Front-end 355 2025-07-27 03:50:31
  • What attributes are used to control display and playback for the html video element?
    What attributes are used to control display and playback for the html video element?
    To control the display and playback of HTML elements, a series of attributes are required. 1. Basic playback control: src specifies the video URL, controls adds default controls, autoplay implements automatic playback (usually needs to be combined with muted), loop playback, muted default muted; 2. Display and layout: width/height sets the size, poster defines the preview diagram, preload controls the loading strategy; 3. Advanced behavior and compatibility: playsinline allows inline playback in iOS, and tags provide multi-format support to ensure cross-browser compatibility.
    HTML Tutorial . Web Front-end 403 2025-07-27 03:50:13
  • Why is there a space between inline-block elements?
    Why is there a space between inline-block elements?
    Spaces are caused by HTML parsing newlines and spaces between inline-block elements into text nodes; 2. It can be eliminated by deleting whitespace characters in HTML, using HTML comments to connect tags, setting the parent container font-size: 0, using negative margin or using Flexbox layout; this behavior is a normal text rendering feature, not a CSS defect, and the fundamental reason lies in the HTML formatting method.
    CSS Tutorial . Web Front-end 235 2025-07-27 03:49:21
  • The Life of a Variable: PHP's Internal `zval` Structure Explained
    The Life of a Variable: PHP's Internal `zval` Structure Explained
    PHP uses zval structure to manage variables. The answer is: 1. zval contains values, types and metadata, with a size of 16 bytes; 2. When the type changes, only the union and type information need to be updated; 3. Complex types refer to structures with reference counts through pointers; 4. When assigning values, copy is used to optimize memory; 5. References make variables share the same zval; 6. Recycling references are processed by a special garbage collector. This explains the underlying mechanism of PHP variable behavior.
    PHP Tutorial . Backend Development 958 2025-07-27 03:47:10
  • Server-Side Scripting Demystified: A Hands-On Introduction to PHP
    Server-Side Scripting Demystified: A Hands-On Introduction to PHP
    PHPisaserver-sidescriptinglanguageusedtocreatedynamicwebcontent.1.Itrunsontheserver,generatingHTMLbeforesendingittothebrowser,asshownwiththedate()functionoutputtingthecurrentday.2.YoucansetupalocalenvironmentusingXAMPPbyinstallingit,startingApache,pl
    PHP Tutorial . Backend Development 558 2025-07-27 03:46:12
  • Essential HTML Tags for Beginners
    Essential HTML Tags for Beginners
    To get started with HTML quickly, you only need to master a few basic tags to build a web skeleton. 1. The page structure is essential, and, which is the root element, contains meta information, and is the content display area. 2. Use the title. The higher the level, the smaller the number. Use tags to segment the text to avoid skipping the level. 3. The link uses tags and matches the href attributes, and the image uses tags and contains src and alt attributes. 4. The list is divided into unordered lists and ordered lists. Each entry is represented and must be nested in the list. 5. Beginners don’t have to force memorize all tags. It is more efficient to write and check them while you are writing. Master the structure, text, links, pictures and lists to create basic web pages.
    HTML Tutorial . Web Front-end 917 2025-07-27 03:45:52
  • Embarking on Modern PHP: Syntax, Servers, and Composer
    Embarking on Modern PHP: Syntax, Servers, and Composer
    The core of modern PHP development is the three pillars of syntax, server and Composer. 1. Use modern PHP syntax: including PHP7.4 type attributes (such as publicstring$name), PHP8.0 union type (int|float), nullsafe operator (?->), match expressions and attributes metadata to improve code safety and readability, and declare declare(strict_types=1) at the top of the file to enable strict types. 2. Choose a suitable local development server: Abandon simple php-S and use LaravelSail, SymfonyCLI or Dock instead
    PHP Tutorial . Backend Development 412 2025-07-27 03:43:51
  • How to add audio to a webpage using the tag?
    How to add audio to a webpage using the tag?
    Use HTML tags to easily add audio to web pages. 1. Use display playback controls. 2. Provide multi-format support such as MP3 and OGG through tags to ensure browser compatibility. 3. Add alternative text prompts browsers that do not support audio. 4. Optional attributes such as loop, muted and preload can further control the playback behavior. 5. It is recommended to avoid automatic playback, use compressed format to reduce loading time, and test the effect in different browsers. After correct configuration, web audio playback can be achieved.
    HTML Tutorial . Web Front-end 941 2025-07-27 03:42:12

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