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  • How to add a placeholder text in an HTML input field?
    How to add a placeholder text in an HTML input field?
    The method to add placeholder text in the HTML input box is to use the placeholder attribute, which specifically includes the following steps and precautions: 1. The basic writing method is to directly add the placeholder attribute in the input tag, such as; 2. It is recommended to use it with the label tag to improve accessibility and user experience. For example, the user name input box should combine label and placeholder; 3. Pay attention to the use of CSS when customizing the style::placeholder style, and the color should not be too light; 4. Placeholder should not be relied on as the only explanation, and important tips should be presented through label or additional text; 5. Test the performance of the mobile terminal, because different platforms may differ; 6.
    HTML Tutorial . Web Front-end 491 2025-07-08 01:17:31
  • What is the difference between div and span in HTML
    What is the difference between div and span in HTML
    A div is a block-level element that occupies one line and is suitable for layout of large blocks of content; 2.span is an inline element that only occupies the content width, and is suitable for inline text styles. The default behavior of the two is different. Div is often used for structural division, and span is used for small-scale text modification. Although the display mode can be changed through CSS, labels should be selected according to semantics to improve readability, SEO and barrier-free access.
    HTML Tutorial . Web Front-end 668 2025-07-08 01:11:42
  • Utilizing the HTML textarea Element for Multi-Line Text Input
    Utilizing the HTML textarea Element for Multi-Line Text Input
    TheHTMLelementisusedformulti-linetextinput,offeringfeatureslikedefaulttext,styling,andJavaScriptinteraction.1.Itallowsuserstoentermultiplelinesoftext,unlikesingle-lineinputfields.2.Defaulttextcanbeseteitherasplaceholderoreditablecontentinsidethetags.
    HTML Tutorial . Web Front-end 742 2025-07-08 00:50:22
  • How to clear a float in HTML/CSS?
    How to clear a float in HTML/CSS?
    The need to clear the float is because the floating element will detach the document stream, causing the parent container to collapse highly or subsequent elements to be misaligned. 1. Use the clear attribute to manually clear float by inserting empty elements and setting clear: both, which is suitable for small projects but introduces semantic tags; 2. Clearfix techniques use pseudo-elements to clear float, do not pollute HTML structure and are highly reusable, which is a modern recommended way; 3. Use flex or grid layout to fundamentally avoid floating problems, and are suitable for modern responsive websites and complex layout components.
    HTML Tutorial . Web Front-end 830 2025-07-08 00:46:11
  • Best HTML tutorial for beginners in 2025
    Best HTML tutorial for beginners in 2025
    TolearnHTMLin2025,chooseatutorialthatbalanceshands-onpracticewithmodernstandardsandintegratesCSSandJavaScriptbasics.1.Prioritizehands-onlearningwithstep-by-stepprojectslikebuildingapersonalprofileorbloglayout.2.EnsureitcoversmodernHTMLelementssuchas,
    HTML Tutorial . Web Front-end 759 2025-07-08 00:25:11
  • Exploring the Shadow DOM Concept in Relation to HTML Structure
    Exploring the Shadow DOM Concept in Relation to HTML Structure
    ShadowDOM is a browser feature that allows developers to attach independent DOM trees to an element in the page, thereby achieving isolation of structure and style. 1. It prevents styles and scripts from conflicting by creating hidden subtrees; 2. Internal elements cannot be directly accessed or modified by external sources, encapsulation and maintainability of components; 3. Supports content projection and theme customization using and CSS variables; 4. Commonly used in WebComponents, third-party component libraries, and scenarios that require strong encapsulation; 5. Suitable for building reusable and non-interference to global UI components, but may not be necessary in small projects.
    HTML Tutorial . Web Front-end 458 2025-07-08 00:04:02
  • How to add a video as a background in HTML?
    How to add a video as a background in HTML?
    To add a video background to a web page, the key is to use HTML tags correctly and optimize relevant attributes. 1. Use tags as background and use CSS positioning to fill the page or local area; 2. The video format is preferred.mp4, and WebM is added to consider compatibility; 3. Add muted and playsinline attributes to ensure automatic playback on the mobile side; 4. Control the video size to optimize the loading speed, and it is recommended to keep it at tens of MB; 5. Add loops to achieve seamless loop playback; 6. It can be flexibly applied to full screen or local blocks, and different effects are achieved by adjusting the container size and positioning method. The above steps can achieve a stable and beautiful video background.
    HTML Tutorial . Web Front-end 853 2025-07-08 00:03:22
  • Implementing Clickable Buttons Using the HTML button Element
    Implementing Clickable Buttons Using the HTML button Element
    To use HTML button elements to achieve clickable buttons, you must first master its basic usage and common precautions. 1. Create buttons with tags and define behaviors through type attributes (such as button, submit, reset), which is submitted by default; 2. Add interactive functions through JavaScript, which can be written inline or bind event listeners through ID to improve maintenance; 3. Use CSS to customize styles, including background color, border, rounded corners and hover/active status effects to enhance user experience; 4. Pay attention to common problems: make sure that the disabled attribute is not enabled, JS events are correctly bound, layout occlusion, and use the help of developer tools to troubleshoot exceptions. Master this
    HTML Tutorial . Web Front-end 623 2025-07-07 02:31:51
  • How to add JavaScript to an HTML page
    How to add JavaScript to an HTML page
    There are several common ways to add JavaScript to HTML pages, which can be selected according to your needs. First, inline scripts are suitable for small functions or tests, and write code directly in HTML, but are not convenient for maintenance; second, external JS files are introduced, with clear structure, conducive to collaboration, and suitable for project development; third, use defer or async attributes to control the loading order to avoid blocking HTML parsing; fourth, dynamically load scripts, loading on demand to improve performance. It is recommended to choose the appropriate method according to the scene, pay attention to the script execution order and loading timing.
    HTML Tutorial . Web Front-end 922 2025-07-07 02:30:22
  • How to associate captions with images or media using the html figure and figcaption elements?
    How to associate captions with images or media using the html figure and figcaption elements?
    Using HTML sums allows for intuitive and semantic clarity to add caption text to images or media. 1. Used to wrap independent media content, such as pictures, videos or code blocks; 2. It is placed as its explanatory text, and can be located above or below the media; 3. They not only improve the clarity of the page structure, but also enhance accessibility and SEO effect; 4. When using it, you should pay attention to avoid abuse, and apply to content that needs to be emphasized and accompanied by description, rather than ordinary decorative pictures; 5. The alt attribute that cannot be ignored, which is different from figcaption; 6. The figcaption is flexible and can be placed at the top or bottom of the figure as needed. Using these two tags correctly helps to build semantic and easy to understand web content.
    HTML Tutorial . Web Front-end 732 2025-07-07 02:30:01
  • What is the difference between HTML and tags?
    What is the difference between HTML and tags?
    The main difference between the harmony and the semantics. 1. It is only used for bold styles, and does not indicate importance; it means that the content is important. 2. Used only for italic style; means emphasis. 3. Screen readers have different ways to read the same. 4. Semantic tags improve accessibility and SEO. 5. Semantic tags should be used to explicitly express intentions.
    HTML Tutorial . Web Front-end 417 2025-07-07 02:27:12
  • What is the purpose of the main tag in HTML?
    What is the purpose of the main tag in HTML?
    Thetagdefinesadocument’sprimarycontent,improvingaccessibilityandSEO.Itensuresscreenreaderscanquicklynavigatetothemainsection,shouldbeuniqueperpage,notnestedinsideheadersornavs,andstartsthecorecontenthere.Searchenginesprioritizecontentwithin,enhancing
    HTML Tutorial . Web Front-end 347 2025-07-07 02:25:52
  • What is the purpose of the lang attribute in the HTML tag?
    What is the purpose of the lang attribute in the HTML tag?
    ThelangattributeinHTMLspecifiesthelanguageofcontent,aidingaccessibilityandSEO.1.Screenreadersuseittoapplycorrectpronunciationrulesfordifferentlanguages.2.Itimprovesaccessibilitybyensuringproperspeechoutputforvisuallyimpairedusers.3.Itsupportsaccurate
    HTML Tutorial . Web Front-end 649 2025-07-07 02:23:32
  • What is Web Storage API in HTML5 (localStorage and sessionStorage)?
    What is Web Storage API in HTML5 (localStorage and sessionStorage)?
    WebStorageAPI provides two ways for clients to store data: localStorage and sessionStorage. localStorage is used to store data permanently, and will not be lost even if the browser is closed. It is suitable for saving user preferences, topic settings and other information; sessionStorage is only valid during the current session and is cleared after closing the page or tag. It is suitable for temporary data such as temporary storage of forms. Both support setItem(), getItem(), removeItem() and clear() methods to operate data, but the stored data must be in string format, and the object or array must be converted through JSON.stringify().
    HTML Tutorial . Web Front-end 303 2025-07-07 02:22:31

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