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  • HTML `crossorigin` Attribute for CORS
    HTML `crossorigin` Attribute for CORS
    The crossorigin attribute is used to control the CORS behavior when HTML resources are requested across domains. Common values are anonymous and use-credentials. 1. It is mainly used in resource tags such as pictures, scripts, style sheets, etc., to determine whether the browser enables the CORS mechanism; 2. The value anonymous means sending CORS requests without credentials, and the server requires credentials to be allowed by use-credentials; 3. Common scenarios include: Canvas drawing requires crossorigin to prevent pollution, CDN loads resources with the server CORS configuration, use use-credentials when authenticated access is required and ensures that the server resonates.
    HTML Tutorial . Web Front-end 768 2025-07-26 00:33:20
  • The `nomodule` Attribute for JavaScript Modules
    The `nomodule` Attribute for JavaScript Modules
    Nomodule is a boolean property of the tag, used to be compatible with old browsers that do not support ESModules. Its function is: the browser that supports module ignores scripts with nomodule, and loads it if it is not supported. This provides different code paths for different browsers. For example:. The actual usage scenarios include modular development and fallback packaged versions, lazy loading of polyfills. Note when using it: if you do not need to be compatible with old browsers, you do not need to use it, ensure that fallback code is compatible, test fallback validity, and avoid script conflicts.
    HTML Tutorial . Web Front-end 613 2025-07-25 03:18:32
  • HTML `type` Attribute for Script and Style Tags
    HTML `type` Attribute for Script and Style Tags
    And tags require a type attribute to tell the browser how to handle the content. 1. The type attribute specifies script or style language types, such as text/javascript (default) or text/css (default). 2. When using ES6 module, you need to set type="module". 3. Non-standard languages (such as SCSS, TypeScript) need to be combined with construction tools and explicitly set the type. 4. For special purposes, use application/json for storage of data. 5. Types can be omitted in ordinary development, but they must be set correctly in modular or experimental projects.
    HTML Tutorial . Web Front-end 446 2025-07-25 03:07:42
  • A Primer on HTML Elements and Attributes
    A Primer on HTML Elements and Attributes
    HTML elements and attributes are the basis of web page structure. 1. Elements define content structure through tags, such as title, paragraph, link, and content grouping; 2. Attributes provide additional information, such as href specifies link address, src specifies image or script source, class and id are used for style and script operations, alt improves accessibility and SEO; 3. When using it, pay attention to the matching between elements and attributes, such as href only applies to or; 4. Common errors include unclosing tags, misuse of attribute names or values, nesting block-level elements in in-line elements, and using outdated tags such as OR. Proper use of HTML elements and attributes helps build a complete and semantic web page.
    HTML Tutorial . Web Front-end 297 2025-07-25 03:07:21
  • HTML `nofollow` Attribute for Links
    HTML `nofollow` Attribute for Links
    nofollow is an attribute in HTML that controls whether search engines track links. Its function is to prevent weight transfer or crawlers from crawling target pages. Common usage scenarios include: 1. Links in user-generated content; 2. Advertising or sponsored links; 3. Links from untrusted sources; 4. Internal functional links. In addition, there are also a variety of rel attribute variants, such as nofollownoopener, sponsored, ugc and noreferrer, which can be used to express link intentions more accurately. It should be noted that nofollow does not completely prevent search engines from crawling pages, and should not be abused to avoid affecting normal recommendations. Rational use of nofollow helps optimize website structure and improve SEO results
    HTML Tutorial . Web Front-end 585 2025-07-25 03:06:22
  • HTML `body` Tag: Main Content Container Explained
    HTML `body` Tag: Main Content Container Explained
    The main content of the web page is placed in the HTML body tag. 1. The body tag is the main container of web page content, containing all user-visible and interactive elements, such as text, pictures, buttons, links and videos, etc.; 2. It is located inside the html tag, and usually after the head tag, the browser only renders the content in the body; 3. The body tag is crucial for SEO optimization, page layout and interaction functions, and all interactive elements must be placed in it; 4. Correct use of body tags includes ensuring that there is only one body in the document, avoiding placing content outside the body, and using semantic tags to enhance structural clarity; 5. Body is also used to set the global style of the page, such as background, font, margin, etc., which is the core of web page design and development.
    HTML Tutorial . Web Front-end 676 2025-07-25 03:05:41
  • HTML `minlength` and `maxlength` Attributes
    HTML `minlength` and `maxlength` Attributes
    minlength and maxlength are attributes in HTML that control the length of input box characters. Pay attention to the correct usage and common problems. For example: Setting minlength="5"maxlength="20" can limit the input characters between 5 and 20. 1. Attributes are only applicable to text type input types; 2. It is necessary to use it with required to avoid null values passing verification; 3. The browser prompt information may vary depending on the device; 4. Common problems include spelling errors, compatibility and script modification content resulting in invalidation; 5. In actual applications, it is recommended to use real-time counting style prompts and always perform back-end verification, while avoiding too small minls.
    HTML Tutorial . Web Front-end 494 2025-07-25 02:55:22
  • HTML `var` Tag for Mathematical Variables
    HTML `var` Tag for Mathematical Variables
    Tags in HTML are used to semantic tags of variables in math or programming, making content more readable and accessible. 1. Designed specifically for variables, different from or; 2. It is italicized by default but can be customized with CSS; 3. It can be embedded in formulas or code blocks to enhance structural consistency; 4. Improve screen reader recognition accuracy and facilitate style maintenance.
    HTML Tutorial . Web Front-end 532 2025-07-25 02:54:23
  • HTML `decoding` Attribute for Images
    HTML `decoding` Attribute for Images
    The decoding attribute of HTML is not a standard attribute, but can be used for performance optimization. It allows developers to specify image decoding methods, such as asynchronous decoding (async), to avoid blocking page rendering; its values include sync, async and auto; currently only supported by Chromium browsers and are invalid in Safari and Firefox; scenarios should be combined with them when using them. If cross-browser compatibility is required, it is recommended to adopt more mature solutions such as lazy loading and responsive images.
    HTML Tutorial . Web Front-end 334 2025-07-25 02:52:22
  • HTML `ping` Attribute for Tracking Link Clicks
    HTML `ping` Attribute for Tracking Link Clicks
    The ping attribute is a tool in HTML for recording user click behavior, which enables tracking by sending asynchronous POST requests before link jumps. It can be used for external link statistics, and is simple to use and does not affect the user experience; its advantages are lightweight, no blocking jumps, but cannot carry complex data; precautions include privacy issues, tracking risk of loss and being unavailable for sensitive operations.
    HTML Tutorial . Web Front-end 655 2025-07-25 02:50:11
  • The `step` Attribute for Numeric Input Fields
    The `step` Attribute for Numeric Input Fields
    The step attribute is used to control the step size of numerical input in HTML forms, improving input accuracy and user experience. The basic usage is to set units that increment or decrease numerical values, such as. Supports decimal steps such as step="0.1" or step="any" to allow any numerical input. It is often used in conjunction with min and max to limit the input range and ensure the consistency of step size. Notes include browser compatibility, JavaScript verification, mobile experience differences and avoiding problems caused by floating point numbers.
    HTML Tutorial . Web Front-end 980 2025-07-25 02:46:02
  • HTML Coding Standards and Conventions
    HTML Coding Standards and Conventions
    Four key points are required to standardize HTML code: 1. Priority is given to the use of semantic tags such as, , etc. to improve structural clarity and SEO; 2. Unified indentation format, it is recommended to indent with spaces, double quotes of attribute values, and unified writing of self-closing tags; 3. Class name naming semantics such as user-card, uniform style using BEM or SMACSS, and kebab-case format; 4. Add module comments and instructions to keep the module structure independent and clear. These specifications can improve readability and collaboration efficiency.
    HTML Tutorial . Web Front-end 701 2025-07-25 02:45:22
  • HTML `pre` and `code` Tags for Code Display
    HTML `pre` and `code` Tags for Code Display
    Use and tags to correctly display the code format on the web page. Keep spaces and line breaks, suitable for displaying the code blocks to be indented; provide semantic markers to indicate that the content is a code snippet; the two are often used in combination to take into account both format and semantics. In addition, you can use CSS to beautify the code blocks, such as setting background colors, fonts and scroll bars. When used alone, it is suitable for inline code and for non-code content but requires retaining formatted content. Rationally selecting tags can improve the clarity and accessibility of HTML structure.
    HTML Tutorial . Web Front-end 157 2025-07-25 02:36:42
  • HTML `autocomplete` Attribute Best Practices
    HTML `autocomplete` Attribute Best Practices
    The autocomplete attribute improves the form experience by controlling the browser's automatic filling behavior. Its core values include on, off and fine-grained types such as username and email; it is recommended to use username and current-password on the login page, and new-password on the registration page; fields such as address, phone and other fields can be optimized for address-level2 and tel to optimize the mobile keyboard pop-up; however, attention should be paid to the differences in browser compatibility, and if necessary, control the fill effect by modifying name/id or JavaScript.
    HTML Tutorial . Web Front-end 176 2025-07-25 02:33:23

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