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  • HTML Best Practices for Mobile Devices
    HTML Best Practices for Mobile Devices
    The core of optimizing HTML pages on the mobile side is to improve loading speed and interactive experience, and it needs to start from four aspects: viewport settings, structure simplification, semantic tags, and picture adaptation. ① Set the viewport to adapt to the device width; ② Reduce DOM nodes to avoid redundant structures; ③ Use semantic labels such as header and nav to improve accessibility; ④ Use srcset and sizes attributes to achieve responsive loading of images, while paying attention to media format and interaction details, so as to lay a solid foundation to ensure smooth mobile experience.
    HTML Tutorial . Web Front-end 981 2025-07-25 01:12:42
  • HTML `meta name='keywords'` (Deprecated for SEO)
    HTML `meta name='keywords'` (Deprecated for SEO)
    Keyword tags are no longer important. Because search engines such as Google no longer regard them as ranking factors, but instead pay attention to real signals such as content, titles, and descriptions. 1. The keywords tag has been lost due to abuse; 2. Modern SEO should pay attention to page content and structured data; 3. Specific scenarios such as internal search and old systems may still be used; 4. Correct methods include optimizing titles and description, natural layout of keywords, and using semantic HTML and structured data.
    HTML Tutorial . Web Front-end 501 2025-07-25 01:09:32
  • The `fetchpriority` Attribute in HTML
    The `fetchpriority` Attribute in HTML
    Use the fetchpriority attribute to improve page performance and user experience, and is suitable for key images on the first screen, important JavaScript files, and fonts or style sheets that need to be loaded as soon as possible. 1.fetchpriority is used for and tags, 2. Supports three values of high, low, and auto. 3. It is recommended to set it to high for key resources only, and keep the default or set to low for others. Note that it has limited support in old browsers and cannot replace other optimization methods.
    HTML Tutorial . Web Front-end 516 2025-07-25 01:04:31
  • HTML `link rel='icon'` for Website Icons
    HTML `link rel='icon'` for Website Icons
    The methods for setting website icons include: 1. The basic writing method is to add ICO format icons to HTML; 2. Prepare multiple sizes and introduce them separately with multiple tags; 3. Add additional meta and link tags for different platforms; 4. Pay attention to path, format compatibility and design suggestions. Correct settings can improve the professionalism and user experience of the website.
    HTML Tutorial . Web Front-end 1004 2025-07-25 00:56:52
  • Effective Use of the HTML Div Element for Layout
    Effective Use of the HTML Div Element for Layout
    The key to making good use of HTML div layout lies in understanding the basic features and combining CSS to implement structured design. 1. When dividing page areas with divs, the structural level should be clarified, such as the header, content area, etc., and the class should be marked clearly; 2. Avoid too deep nesting, it is recommended to be within three layers to improve maintainability; 3. The structure naming is unified in style, and the lowercase plus short horizontal lines are recommended; 4. Combined with Flexbox and Grid to achieve efficient layout, the former is suitable for one-dimensional structure, and the latter is suitable for two-dimensional structure; 5. Avoid abuse of divs, and priority is to use semantic labels to optimize SEO and accessibility; 6. Pay attention to style pollution problems, and it is recommended to use BEM and other naming specifications; 7. Set necessary width and height or background colors to avoid "invisibility" of divs. Master these
    HTML Tutorial . Web Front-end 371 2025-07-25 00:56:32
  • HTML Data Attributes for Dynamic Content
    HTML Data Attributes for Dynamic Content
    The data attribute is a feature in HTML5 for storing custom data, allowing information to be attached to HTML elements by attribute names starting with data-, which facilitates JavaScript operations. Its main uses include: 1. Identify the state of the element, such as marking whether the button is activated with data-active, and reading the value through dataset to execute logic; 2. Carry data when interacting with the backend, such as using data-item-id to save the unique ID of the list item, so that details can be obtained when clicking; 3. Control component behavior, such as using data-modal-delay and data-animation to configure modal box parameters to improve flexibility. When using it, you should pay attention to: Avoid storing sensitive or large amounts of data.
    HTML Tutorial . Web Front-end 414 2025-07-25 00:42:51
  • Accessible HTML Tables Explained
    Accessible HTML Tables Explained
    The key to ensuring accessibility of web tables is to use semantic HTML structures, add descriptions and titles, and maintain a consistent experience between visual and non-visual users. 1. Use correct tags such as,,, and clarify the table structure, and define the table header level through scope attribute. 2. Add title or aria-describedby description to complex tables to help screen readers understand the content. 3. Avoid hiding the table header directly, use the .sr-only class to retain the readability of assistive technology, and ensure that the small screen stacking style does not affect the reading order. These practices can improve the understanding and experience of all users of the data.
    HTML Tutorial . Web Front-end 635 2025-07-25 00:32:41
  • Implementing Drag and Drop Functionality in HTML5
    Implementing Drag and Drop Functionality in HTML5
    To implement the web page drag and drop function, first set the element draggable="true" and listen for the dragstart event to define the drag data; secondly, add dragover, dragenter and drop event listeners to the target area, and call e.preventDefault() in the dragover to allow placement; if you need to upload a file, get e.dataTransfer.files in the drop event to process the file object; finally, you can improve the user experience through style feedback such as highlighted borders. Master these key points to flexibly apply drag and drop functions in the project.
    HTML Tutorial . Web Front-end 756 2025-07-25 00:06:32
  • The `itemref` Attribute for Microdata
    The `itemref` Attribute for Microdata
    itemref is an attribute in Microdata that is used to disperse content in associated pages. Its main purpose is to enable elements that do not belong to the current item scope to become part of the object, thereby realizing remote reference. The usage methods include: 1. Add item scope and unique id to the main object; 2. Use itemref to refer to the id of other elements on the main object; 3. The referenced element must have itemprop and the id is consistent with the itemref list. Applicable scenarios include layout restrictions, multiplexing structures, CMS systems, etc. Notes include: It can only be used for elements with item scope, the target element must be the same page, the id must be unique, not all tools support itemref, it is recommended to make
    HTML Tutorial . Web Front-end 184 2025-07-24 03:19:51
  • HTML `placeholder` Attribute for Input Fields
    HTML `placeholder` Attribute for Input Fields
    The placeholder property is an auxiliary function in HTML forms for input box prompts. It displays light text when the input box is empty, and it will automatically disappear after the user starts input. The correct way to use it is to use it as a supplementary description rather than replace label tags. The specific steps are: 1. Use label and placeholder at the same time, such as username: 2. Avoid labeling required items or providing key information with placeholder; 3. Control the length of the prompt text to keep it simple; 4. Adjust the style through CSS to ensure compatibility; 5. Applicable to input scenarios with clear formats such as email, search boxes, etc., and password boxes should be used with caution.
    HTML Tutorial . Web Front-end 559 2025-07-24 03:08:51
  • HTML `track` Element for Video Captions and Subtitles
    HTML `track` Element for Video Captions and Subtitles
    The track element is a tag in HTML5 that is used to add text tracks to videos. It supports subtitles, titles, descriptions, chapters, and metadata, and is usually made using WebVTT format files. 1. When using it, you need to add and specify properties such as src, kind, srclang, label, etc. 2. The WebVTT file format must start with WEBVTT and include timestamps and contents. 3. Mainstream browsers support track but limited style control. 4. Multiple tracks can be added to achieve multilingual support. Correct use of track can improve video accessibility and user experience.
    HTML Tutorial . Web Front-end 532 2025-07-24 03:06:42
  • Implementing HTML `contenteditable` for Rich Text Editors
    Implementing HTML `contenteditable` for Rich Text Editors
    TobuildarichtexteditorusingHTML’scontenteditableattribute,startbymakinganelementeditablewithcontenteditable="true",thenhandleformattingwithJavaScriptviaexecCommandorDOMmanipulation.1.Usecontenteditableonelementslikeorfordirectediting.2.Hand
    HTML Tutorial . Web Front-end 644 2025-07-24 03:00:52
  • HTML Event Attributes: `onclick`, `onmouseover`, etc.
    HTML Event Attributes: `onclick`, `onmouseover`, etc.
    Common HTML event attributes include onload, onchange, onsubmit, onmouseout, onkeydown and onkeyup; onclick is used to respond to click behavior, and it is recommended to achieve interaction through function calls or JS binding; onmouseover and onmouseout are often used for hovering effects; it is recommended to use addEventListener to achieve event binding for maintenance and extension.
    HTML Tutorial . Web Front-end 255 2025-07-24 02:59:41
  • Working with HTML `details` and `summary`
    Working with HTML `details` and `summary`
    details and summary tags can achieve folding and expansion effects without JavaScript. 1. Details is used as a container, and the content is hidden by default; 2. summary is used as the title to open and close; 3. You can customize the style through CSS, such as removing the default arrows, setting backgrounds and padding; 4. Applicable to FAQ, setting panels and other scenarios; 5. Pay attention to browser compatibility and structural correctness, and summary must be placed inside details.
    HTML Tutorial . Web Front-end 966 2025-07-24 02:56:13

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