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  • How to handle long words or text that overflows its container?
    How to handle long words or text that overflows its container?
    The key to handling long words or text overflow containers is to combine CSS properties and text processing techniques. First use overflow-wrap or word-break, where overflow-wrap is suitable for ordinary text, and word-break is used for strings without natural breakpoints; secondly, set the maximum width or use a responsive container to adjust the container size through max-width, responsive units or flex-grow; secondly, use the white-space attribute to control spaces and line breaking behaviors, such as normal, pre-wrap or nowrap; finally consider using text truncation in UI components, through white-space: nowrap, overf
    CSS Tutorial . Web Front-end 797 2025-06-25 00:24:00
  • What is the :root pseudo-class and how does it differ from html?
    What is the :root pseudo-class and how does it differ from html?
    :root is used in CSS to select document root elements, usually equivalent to tags in HTML, but with higher specificity. 1.:root is suitable for defining global CSS variables, such as --main-color; 2. It provides higher priority to avoid style conflicts; 3. Still applicable in elementless documents (such as XML); 4. It is easier to maintain and dynamically modify topics when combined with component frameworks. Compared to using the html selector directly, :root improves code maintainability and consistency, and is especially suitable for complex projects.
    CSS Tutorial . Web Front-end 216 2025-06-25 00:23:20
  • How do I add a favicon to an HTML document?
    How do I add a favicon to an HTML document?
    ToaddafavicontoanHTMLdocument,followthesesteps:1.Createafaviconfilein.icoor.pngformatwithsizeslike16x16pxor32x32px;2.Placethefileinyourwebsite’srootdirectory,preferablynamedfavicon.icoforautomaticrecognition;3.Linkthefaviconinthesectionusing;4.Forbet
    HTML Tutorial . Web Front-end 713 2025-06-25 00:22:02
  • What is Responsive Web Design (RWD)?
    What is Responsive Web Design (RWD)?
    Responsive web design (RWD) is necessary because it enhances multi-device user experience and optimizes SEO. 1. Improve the access experience of mobile users and avoid frequent scaling and sliding; 2. It is conducive to search engine optimization and maintaining a single website and content; 3. Core technologies include elastic layout, media query, elastic pictures, and breakpoint settings; 4. Implementation suggestions include mobile priority, using CSS framework, actual testing of multi-device effects, paying attention to fonts and click areas, and correctly setting the viewport.
    CSS Tutorial . Web Front-end 961 2025-06-25 00:21:41
  • What are properties and methods in PHP classes?
    What are properties and methods in PHP classes?
    The properties and methods of classes in PHP are the basis of object-oriented programming. Attributes are used to store the data of an object, such as $name and $email in $classUser; methods are used to define the behavior of an object, such as setName() and getName() are used to safely set and get property values. Best practices include: 1. Keep attributes private to avoid direct access; 2. Use getter and setter methods to control attribute operations; 3. Encapsulate related functions into methods; 4. Use type declarations to improve code robustness. Following these principles can improve the maintainability and reusability of your code.
    PHP Tutorial . Backend Development 691 2025-06-25 00:20:50
  • Which CSS inclusion method is the fastest?
    Which CSS inclusion method is the fastest?
    InlineCSSisthefastestmethodforinitialrendering.1)InlineCSSaddsstylesdirectlytoHTML,requiringnoadditionalrequests.2)InternalCSS,withinthetag,isslightlyslowerduetoparsing.3)ExternalCSS,linkedvia,isslowestinitiallybutbenefitsfromcachingandHTTP/2,makingi
    CSS Tutorial . Web Front-end 642 2025-06-25 00:19:50
  • What are some popular CSS-in-JS libraries?
    What are some popular CSS-in-JS libraries?
    The core reason for the popularity of CSS-in-JS libraries is to improve maintainability and scope isolation. 1. styled-components is the most well-known solution in the React community. It writes CSS through template strings. The advantages include automatic prefix and support for dynamic styles, but performance and SSR require additional optimization. 2.Emotion flexibly supports multiple APIs, suitable for performance-sensitive and large-scale projects, and has good SSR support. 3. Although TailwindCSS is not a traditional CSS-in-JS, it is widely popular because of its JIT model and tool-based methods, and is suitable for designing projects with unified systems. 4. Other libraries such as styled-jsx, linaria and goober have their own characteristics and are suitable for different scenarios
    CSS Tutorial . Web Front-end 429 2025-06-25 00:17:20
  • What is the scope of a CSS Custom Property?
    What is the scope of a CSS Custom Property?
    The scope of CSS custom properties depends on the context of their declaration, global variables are usually defined in :root, while local variables are defined within a specific selector for componentization and isolation of styles. For example, variables defined in the .card class are only available for elements that match the class and their children. Best practices include: 1. Use: root to define global variables such as topic color; 2. Define local variables inside the component to implement encapsulation; 3. Avoid repeatedly declaring the same variable; 4. Pay attention to the coverage problems that may be caused by selector specificity. Additionally, CSS variables are case sensitive and should be defined before use to avoid errors. If the variable is undefined or the reference fails, the fallback value or default value initial will be used. Debug can be done through the browser developer
    CSS Tutorial . Web Front-end 282 2025-06-25 00:16:20
  • A Better API for the Intersection and Mutation Observers
    A Better API for the Intersection and Mutation Observers
    Zell discusses refactoring the Resize, Mutation, and Intersection Observer APIs for easier usage, demonstrating how to implement callback and event listener patterns, while highlighting available options and methods.
    CSS Tutorial . Web Front-end 864 2025-06-24 10:24:13
  • What is the declaration, and what does it do?
    What is the declaration, and what does it do?
    Adeclarationisaformalstatementthatsomethingistrue,official,orrequired,usedtoclearlydefineorannounceanintent,fact,orrule.Itplaysakeyroleinprogrammingbydefiningvariablesandfunctions,inlegalcontextsbyreportingfactsunderoath,andindailylifebymakingintenti
    HTML Tutorial . Web Front-end 996 2025-06-24 00:57:51
  • What is static return type in PHP 8?
    What is static return type in PHP 8?
    ThestaticreturntypeinPHP8meansthemethodisexpectedtoreturnaninstanceoftheclassit'scalledon,includinganychildclass.1.Itenableslatestaticbinding,ensuringthereturnedvaluematchesthecallingclass'stype.2.Comparedtoself,whichalwaysreferstothedefiningclass,an
    PHP Tutorial . Backend Development 960 2025-06-24 00:57:31
  • How do I transfer data during a drag-and-drop operation using the dataTransfer object?
    How do I transfer data during a drag-and-drop operation using the dataTransfer object?
    In the drag-and-drop operation, the dataTransfer object realizes data transfer through setData() and getData(). 1. Use setData() to set data in the dragstart event. You need to specify the MIME type and content, such as 'text/plain' and 'text/uri-list'; 2. Use getData() to extract data according to the same type in the drop event, and you can also use the type attribute to determine the available types; 3. You can control the drag effect prompts through effectAllowed and dropEffect, such as copying or moving; 4. When dragging multiple items, you can use JSON format to encapsulate and drag text
    HTML Tutorial . Web Front-end 671 2025-06-24 00:57:12
  • How do I use the tabindex attribute to control the tab order of elements?
    How do I use the tabindex attribute to control the tab order of elements?
    ThetabindexattributecontrolshowelementsreceivefocusviatheTabkey,withthreemainvalues:tabindex="0"addsanelementtothenaturaltaborder,tabindex="-1"allowsprogrammaticfocusonly,andtabindex="n"(positivenumber)setsacustomtabbing
    HTML Tutorial . Web Front-end 441 2025-06-24 00:56:51
  • What is the difference between MySQLi and PDO in PHP?
    What is the difference between MySQLi and PDO in PHP?
    WhenchoosingbetweenMySQLiandPDOforPHPdatabaseconnectivity,thedecisiondependsonspecificprojectneeds.1.PDOsupportsmultipledatabases,makingiteasiertoswitchbetweenMySQL,PostgreSQL,orSQLitewithminimalcodechanges,whileMySQLiislimitedtoMySQLonly.2.Bothoffer
    PHP Tutorial . Backend Development 836 2025-06-24 00:56:31

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