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  • HTML `data` Attribute: Storing Custom Data
    HTML `data` Attribute: Storing Custom Data
    The data attribute is an attribute in HTML5 used to store custom data, named after data-, such as data-user-id and data-role, which is convenient for JavaScript reading and operation. When using it, access through dataset, such as element.dataset.userId, it can also be set dynamically, such as element.dataset.role='guest'. Suitable for component state management, front-end interaction and UI control information. Be careful not to store sensitive data, only string types, and avoid abuse causing HTML bloat. For example, complex data can be stored through JSON encoding and then parsed and used in JS.
    HTML Tutorial . Web Front-end 163 2025-07-20 01:07:11
  • The `autofocus` Attribute in HTML Forms
    The `autofocus` Attribute in HTML Forms
    autofocus is a boolean property in HTML that automatically targets the specified form element when the page is loaded. 1. It is implemented by directly adding to or in a tag, such as; 2. After the page is loaded, the cursor will automatically appear in the element, which is suitable for scenes that require quick input, such as search boxes, login pages, etc.; 3. Only one element of a page can use autofocus, otherwise only the first one will take effect; 4. Its advantages include saving user operations, guiding user behavior, and enhancing barrier-free experience; 5. It is recommended to use a single input item, expected immediate input or clear process interface; 6. Abuse in complex forms or modal boxes should be avoided to interfere with users; 7. More flexible control can be achieved through JavaScript replacement
    HTML Tutorial . Web Front-end 565 2025-07-20 01:01:42
  • HTML `ins` Tag for Inserted Text
    HTML `ins` Tag for Inserted Text
    Use HTML tags to display new content gracefully. The label is designed for tag insert text, with an underlined style by default, and is semantic, suitable for version comparison and revision scenarios; 1. Its style can be customized through CSS without affecting the semantic structure; 2. Combined with the datetime attribute, it can record the modification time, supports JavaScript or back-end logical processing, but must comply with the ISO8601 format; 3. Common application scenarios include article modification records, price change prompts and legal terms change notifications to improve the hierarchy and maintainability of the page.
    HTML Tutorial . Web Front-end 255 2025-07-20 00:41:52
  • HTML `iframe` `referrerpolicy` Attribute
    HTML `iframe` `referrerpolicy` Attribute
    The referrerpolicy attribute is used to control the Referer sending policy of embedded resources (such as iframes) in HTML, affecting whether and how the current page URL is exposed to the embedded content. Common values include: 1.no-referrer (no Referrer sent); 2.no-referrer-when-downgrade (default, HTTPS to HTTP is not sent); 3.origin (only send source information); 4.strict-origin (only send source information in a secure context); 5.same-origin (only send same-origin requests); 6.strict-origin-when-cross-
    HTML Tutorial . Web Front-end 231 2025-07-20 00:29:21
  • Understanding HTML `charset` for Character Encoding
    Understanding HTML `charset` for Character Encoding
    The garbled code of web pages is usually due to incorrect charset settings in HTML. charset is used to specify the character encoding method used by web pages to ensure that the browser correctly parses the text content. Common encoding methods include UTF-8, ISO-8859-1, GBK/GB2312, etc. To set the charset correctly, add it in the HTML part, while ensuring that the file save encoding is consistent with the settings. In addition, you need to check whether the server response header is set to the correct Content-Type encoding. If garbled code still appears, you can check whether the file storage encoding, browser loading encoding, server character set and external resource encoding are consistent. In short, file encoding, HTML settings and server configuration are unified.
    HTML Tutorial . Web Front-end 307 2025-07-20 00:11:23
  • HTML `section` vs. `div`: When to Use Which
    HTML `section` vs. `div`: When to Use Which
    Section should be used to express independent content blocks first, and div should be used only for layout. Specific judgment: 1. Use section when the block has a title and needs to express independent chapters, such as "About Us"; 2. Use div when only for layout or style control, such as button group; 3. Remove tags and affect structure understanding, use section, otherwise use div; 4. Reasonably match other semantic tags to improve HTML professionalism.
    HTML Tutorial . Web Front-end 544 2025-07-20 00:10:02
  • Building Your First Web Page with HTML
    Building Your First Web Page with HTML
    To build a web page, you need to master the HTML foundation. First, HTML is the core language for building web pages, and you can quickly get started with zero foundation; secondly, HTML pages are composed of basic structures, including declarations, root elements, meta information and titles, and content areas; then, commonly used tags such as title-, paragraphs, links, pictures, unordered lists and ordered lists can help organize content; in addition, the page can be simply beautified by inline style attributes, such as setting the font color and background color; finally, save it as a .html file and open it in a browser to test and view it, and refresh it after modification. Hands-on practice is the key to mastering HTML.
    HTML Tutorial . Web Front-end 701 2025-07-20 00:03:02
  • HTML `aria-live` Regions for Dynamic Content Updates
    HTML `aria-live` Regions for Dynamic Content Updates
    Anaria-liveregionisatoolformakingdynamiccontentupdatesaccessibletoscreenreaderusersbyinformingthemofchangeswithoutrequiringapagereload.Itallowsdeveloperstoindicatetheurgencyofupdateswithvalueslikepoliteorassertive,andshouldbeappliedtoregionscontainin
    HTML Tutorial . Web Front-end 222 2025-07-19 03:08:01
  • Understanding the HTML Document Structure
    Understanding the HTML Document Structure
    A standard HTML document contains four basic structural tags, namely document type declaration, root element, meta information area, and content area. 1. Located in the first line of the document, it declares the use of HTML5 standards to avoid the browser from entering weird mode; 2. It wraps the entire page content as a root element, and it is recommended to add lang attributes to specify the language; 3. It is used to store meta information, including character encoding, page title, description information, and the introduction of CSS and JavaScript files; 4. It is a container for user-visible content, including paragraphs, pictures, links and other elements, and it is recommended to use semantic tags such as, etc. to improve structural clarity. The correct use of these infrastructures is critical to compatibility, accessibility, and SEO optimization.
    HTML Tutorial . Web Front-end 415 2025-07-19 03:06:13
  • Keyboard Accessibility with HTML Elements
    Keyboard Accessibility with HTML Elements
    In web development, native HTML controls should be used first and keyboard interactions of custom components should be handled manually. 1. Use semantic HTML such as, etc. to ensure the default keyboard behavior support; 2. Custom components need to add tabindex, role attributes and keyboard event monitoring to realize Enter activation, direction key switching and other functions; 3. Manage focus order and retain visual feedback to avoid users from losing their pages.
    HTML Tutorial . Web Front-end 510 2025-07-19 03:05:52
  • HTML `input` `readonly` vs. `disabled` Attributes
    HTML `input` `readonly` vs. `disabled` Attributes
    There is a significant difference between readonly and disabled in HTML forms. 1. The readonly field cannot be edited but will be submitted with the form. It is suitable for scenarios where it needs to be submitted but is prohibited for modification, such as order number; the disabled field cannot be edited and will not be submitted, and is suitable for fields that do not need to be submitted at all. 2. readonly usually keeps the appearance of the input box unchanged, while disabled often makes the control gray and prevents interaction. 3. The readonly field participates in form verification, and the disabled field does not participate, affecting the verification logic and barrier-free support.
    HTML Tutorial . Web Front-end 700 2025-07-19 03:05:31
  • HTML `translate` Attribute for Translation Control
    HTML `translate` Attribute for Translation Control
    HTML's translate property is used to control whether the content should be automatically translated by the browser. 1. It has two values: translate="yes" (default) means that translation is allowed, and translate="no" means that translation should not be translated; 2. It is recommended to keep the brand name, code, technical terms, unit abbreviation, username, etc. as it is and use translate="no"; 3. Note that it only affects the browser's built-in translation function, does not prevent manual copying and translation, nor does it affect search engines, and cannot replace the complete internationalization solution, and may not be supported in old browsers.
    HTML Tutorial . Web Front-end 618 2025-07-19 03:04:21
  • Submitting HTML Forms: `action` and `method` Attributes
    Submitting HTML Forms: `action` and `method` Attributes
    The action attribute specifies the target URL for form submission, and the method attribute determines the data sending method. 1. Action is often filled in the backend interface address, such as /submit-form or full URL, and if left blank, it will be submitted to the current page; 2. Method is commonly used with GET and POST. GET is suitable for obtaining non-sensitive data, while POST is suitable for submitting sensitive or large amounts of data; 3. Notes include path correctness, whether the server processes the corresponding method, form needs to have submit buttons and cross-domain issues. Understanding and correctly configuring these two attributes can effectively improve the stability and security of form functions.
    HTML Tutorial . Web Front-end 236 2025-07-19 02:56:12
  • HTML `data-*` Attributes for Custom Data
    HTML `data-*` Attributes for Custom Data
    The correct use of HTML data-properties must follow naming specifications, store string values, and avoid abuse. First, the attribute name must start with data-, and lowercase words are separated by hyphen, such as data-user-id; second, the value must be of string type, and complex data must be converted into JSON strings; finally, it is only used in scenarios that require JS processing, and does not replace semantic tags or CSS class names. In JavaScript, it can be accessed through the dataset object. The data-user-name in HTML corresponds to the camel in JS named userName. Common uses include storing data IDs, controlling behavior switches, passing configuration information, and cooperating with frameworks. Notes include: Do not store sensitive information
    HTML Tutorial . Web Front-end 710 2025-07-19 02:55:22

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