Article Tags
Article Tags
How to Add Audio to Your Website with the HTML5 Tag? (Tutorial)
HTML5 tags can be directly embedded with audio without plug-ins; it supports src or multiple formats (such as MP3, OGG) to improve compatibility; attributes such as controls, autoplay, loop, muted, and preload can be added to control behavior; both CSS styles and accessible designs such as aria-label and text descriptions need to be considered.
Dec 28, 2025 am 12:58 AM
How to create accessible web forms with HTML5 and ARIA.
StartwithsemanticHTML5formelementslikelabeledinputs,fieldset,andlegend,thenenhanceaccessibilityusingARIAattributessuchasaria-required,aria-invalid,andaria-describedbywhenneeded.Ensurekeyboardnavigationwithlogicaltaborderandvisiblefocusindicators,supp
Dec 27, 2025 am 06:03 AM
How to use the HTML5 placeholder attribute in input fields? (A Quick Guide)
The placeholder attribute of HTML5 provides light-colored prompt text for the input box. It is only displayed when it is empty and not focused. It cannot replace the label. It needs to be used in conjunction with the label. The style can be customized with CSS pseudo-elements, and the prompt should be short and non-key.
Dec 27, 2025 am 05:33 AM
How to Use HTML5 Data Attributes (data-*)? (Practical Examples)
The HTML5data attribute is used to store custom metadata in elements. It starts with data- and is named in lowercase. It can be read with dataset (camel case) or getAttribute (original string). It is suitable for lightweight scenarios such as APIID and UI status. Sensitive data or semantic duplication is disabled.
Dec 27, 2025 am 05:00 AM
How to lazy load images in HTML5 for faster page speed? (Code Example)
Use the loading="lazy" attribute to implement lazy loading of images natively, which is widely supported by modern browsers and does not require JavaScript; it must be avoided for first-screen images and used with width/height to prevent layout offset.
Dec 27, 2025 am 03:45 AM
How to optimize images for an HTML5 website? (Best Practices)
Optimizeimagesbyselectingappropriateformats(JPEGforphotos,PNGfortransparency,WebPforsmallersize,SVGforicons),resizingtodisplaydimensionsbeforecompression,usingsrcset/sizesforresponsiveness,andlazy-loadingoffscreenimageswithdecoding="async"a
Dec 27, 2025 am 03:20 AM
How to Use the required Attribute for HTML5 Form Validation? (Simple Tutorial)
The required attribute of HTML5 can natively implement required form validation. Just add the required Boolean attribute to input, select or textarea, and the browser will automatically verify the non-null value when submitting. It supports text, email, drop-down, checkbox and text fields, but is not suitable for hidden and other types, and requires secondary verification on the server side.
Dec 27, 2025 am 02:16 AM
How to Make an HTML5 Website Responsive with CSS? (Media Queries Explained)
To make an HTML5 website responsive, you need to use CSS media queries to adjust the style according to screen size, etc., and adhere to mobile-first design; first add viewport meta tags and semantic elements, then use min-width media queries to progressively enhance it, and cooperate with flexible layout, image adaptation, and real-machine testing.
Dec 27, 2025 am 01:50 AM
How to Embed SVG Graphics Directly into HTML5? (Best Methods)
InlineSVGembeddingusestagsforfullstyling/interactivity,forexternalfileswithfallbacks,CSSdataURIsorwithforreusableicons,andSVGOoptimizationforperformanceandaccessibility.
Dec 27, 2025 am 01:12 AM
How to Add Captions to HTML5 Video with the Element? (Accessibility Guide)
Usetheelementinsidetoaddaccessible,time-synchronizedcaptions;itrequireskind,src,andsrclangattributes,supportsmultiplelanguages/typesviaseparatetags,needsavalidWebVTTfile,andshouldbetestedforaccessibilityandcontrastcompliance.
Dec 27, 2025 am 01:08 AM
How to use the required attribute in HTML5 forms? (Validation Example)
TherequiredattributeinHTML5enforcesmandatoryformfieldswithoutJavaScriptbyusingabooleanflag;itworkswithinput,select,andtextareaelements,triggersbrowservalidationonemptysubmission,supportsCSSpseudo-classeslike:requiredand:invalid,andpairswithotherattri
Dec 27, 2025 am 12:41 AM
How to use HTML5 data attributes for custom JavaScript interactions.
HTML5dataattributesstorecustomdatainelementsforJavaScriptuse.2.Theystartwithdata-andareaccessedviadatasetorgetAttribute().3.datasetconvertskebab-casetocamelCase.4.Usethemfordynamicfeatureslikemodalsortabs.5.Bestpracticesincludeusingdescriptivenames,s
Dec 26, 2025 am 05:09 AM
How to Style HTML5 Form Elements with CSS? (A Complete Guide)
HTML5 form styles need to be reset to the browser's default style first, and then beautified in a targeted manner; the key points include appearance:none, box-sizing, pseudo-element custom sliders/placeholders, status pseudo-classes, and hiding native check boxes/radio boxes and simulating them with labels.
Dec 26, 2025 am 04:56 AM
How to Use HTML5 for Mobile Web Development? (Best Practices)
HTML5isthefoundationformodernmobilewebdevelopment—lightweight,responsive,andwidelysupportedacrossiOS,Android,andcross-platformbrowsers.Tobuildfast,accessible,andreliablemobilesitesandwebapps,focusonsemanticstructure,perfo
Dec 26, 2025 am 04:52 AM
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