Found a total of 10000 related content
How to Stop HTML Buttons from Submitting Forms?
Article Introduction：How to Prevent Form Submission from ButtonsProblem:In certain scenarios, such as using HTML5 button elements for adding or removing items, it's...
2025-01-02
comment 0
1062
Styling new HTML5 form elements effectively.
Article Introduction：To beautify HTML5 form elements, you need to deal with the differences in default style and browser. The specific methods are as follows: 1. Use ::-webkit-inner-spin-button and ::-webkit-outer-spin-button pseudo-elements to remove the up and down arrows; 2. Remove the default styles from input[type="range"] to customize the track and thumb part; 3. Use the native input[type="file"] and use the label simulation button to beautify the file upload control; 4. Use -we
2025-07-03
comment 0
214
Using ARIA attributes with HTML5 semantic elements for accessibility
Article Introduction：The reason why ARIA and HTML5 semantic tags are needed is that although HTML5 semantic elements have accessibility meanings, ARIA can supplement semantics and enhance auxiliary technology recognition capabilities. For example, when legacy browsers lack support, components without native tags (such as modal boxes), and state updates need to be dynamically updated, ARIA provides finer granular control. HTML5 elements such as nav, main, aside correspond to ARIArole by default, and do not need to be added manually unless the default behavior needs to be overridden. The situations where ARIA should be added include: 1. Supplement the missing status information, such as using aria-expanded to represent the button expansion/collapse status; 2. Add semantic roles to non-semantic tags, such as using div role to implement tabs and match them
2025-07-07
comment 0
316
HTML5 Forms: Input Types (Part 1) - SitePoint
Article Introduction：Detailed explanation of HTML5 form input type and best practices
Core points
HTML5 forms introduce new input types, such as email, search, date, time, number, range, color, etc. These types provide user interface elements and native data verification functions that are more consistent with data types. Even in older browsers, these new input types work properly, except that they will appear as standard text fields by default.
The search input type (type="search") provides a search field to provide users with intuitive search site prompts. It usually comes with a built-in clear button and can be styled to match the browser or operating system
2025-02-18
comment 0
608
Understanding HTML5 Media Autoplay Policy Changes
Article Introduction：The browser limits HTML5 media autoplay for user experience. Starting from Chrome 66, only silent automatic playback is allowed, and Safari and Firefox policies are stricter. Solutions include: 1. Mute by default and provide an unmute button; 2. Listen to the user to play a sound video after the first interaction; 3. When the iframe is embedded with the muted=1 parameter; 4. The mobile terminal needs to add the playsinline attribute. JS controls errors when playing, ensures that user interaction triggers and is compatible with promises from different browsers.
2025-07-04
comment 0
288
What are the various input types available in html forms and their uses?
Article Introduction：HTML forms support multiple input types to suit different data entry requirements. 1. Text input is used for basic data entry, such as text and password, and interaction can be enhanced through placeholder, maxlength, required and other attributes; 2. HTML5 introduces special input types such as email, number, date, tel, and url to improve data accuracy and usability; 3. Selection and operation controls include checkbox, radio, submit, and button, for multiple selection, single selection and submission operations; 4. Hidden is used to pass uneditable data, and file is used for file upload and can limit file types. When using it, you need to consider browsing
2025-07-04
comment 0
986
Validating HTML5 markup using online tools and validators.
Article Introduction：The steps to verify HTML5 code normativeness include using tools such as W3CMarkupValidationService to check. 1. Open the W3C validator and enter the web page URL or paste the source code; 2. Click the "Check" button to start verification; 3. Check the error and warning content in the report and repair it item by item; 4. Based on the actual situation, determine whether to handle non-fatal errors; 5. Upload HTML files for verification during local development. Common errors include unclosed labels, discarded labels, unquoted attribute values, irregular custom attributes, and element nesting errors, which can be modified one by one according to the prompts.
2025-07-06
comment 0
894
What are common HTML5 validation errors?
Article Introduction：Common verification errors when newbies write HTML5 include unclosed tags, wrong format of self-closed tags, unquoted attribute values, use of discarded tags, and improper use of form attributes. 1. Structural tags need to be closed correctly; 2. Self-closed tags should be uniformly used in standard forms, such as not XML style; 3. It is recommended to always put quotes in attribute values ??to avoid special character problems; 4. Replace outdated tags such as CSS style; 5. Form elements should use type attributes such as email and required to ensure that the verification function takes effect. At the same time, note that the default type of button is submitted may cause unexpected submission.
2025-06-22
comment 0
886
How to clear localStorage in HTML5?
Article Introduction：There are two main ways to clear localStorage in HTML5. First, use localStorage.clear() to clear all data, which is suitable for situations where all storages under the current domain name need to be deleted at one time; second, use localStorage.removeItem('keyName') to delete the data of the specified key name, which is used to clear only specific data items. In addition, it can also be combined with event listening to realize automatic cleaning when page loading or user operations, such as performing deletion or binding logout button click event trigger clearing when page loading. It should be noted that localStorage data is persistent and will always exist if it is not cleared. Data is isolated between different domain names.
2025-07-09
comment 0
854
How to create an H5 page?
Article Introduction：The key steps to creating an H5 page include preparing the infrastructure, adding content, beautifying the page, and adding interactive effects. 1. Prepare the infrastructure: Use HTML5 standard templates, including basic elements such as DOCTYPE declarations, html, head and body; 2. Add content: Use h1, p, img and other tags to insert titles, paragraphs and pictures, and pay attention to paths and alt attributes; 3. Beautify the page: Set styles such as fonts, colors, spacings, etc. through style tags or external CSS files; 4. Add interactive effects: Use JavaScript to implement simple functions, such as clicking on a pop-up window on a button, it is recommended to place the script before the body end tag to optimize the loading speed.
2025-07-09
comment 0
432
Understanding the autoplay policy changes affecting HTML5 video.
Article Introduction：The core reason why browsers restrict the automatic playback of HTML5 videos is to improve the user experience and prevent unauthorized sound playback and resource consumption. The main strategies include: 1. When there is no user interaction, audio automatic playback is prohibited by default; 2. Allow mute automatic playback; 3. Audio videos must be played after the user clicks. The methods to achieve compatibility include: setting muted properties, mute first and then play in JS, and waiting for user interaction before playing. Browsers such as Chrome and Safari perform slightly differently on this strategy, but the overall trend is consistent. Developers can optimize the experience by first mute playback and provide an unmute button, monitoring user clicks, and handling playback exceptions. These restrictions are particularly strict on mobile devices, with the aim of avoiding unexpected traffic consumption and multiple videos
2025-07-03
comment 0
818
Dave The Diver: How To Catch Spider Crabs
Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w
2025-01-10
comment 0
776
Prepare for Interview Like a Pro with Interview Questions CLI
Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI
What is the Interview Questions CLI?
The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview
2025-01-10
comment 0
1404
