The page will be displayed in its original size in the iPhone's browser, no zooming is allowed.
width - the width of the viewport height - the height of the viewport
initial-scale - the initial scaling ratio
minimum-scale - the minimum ratio that the user is allowed to zoom to
maximum-scale - the maximum ratio that the user is allowed to zoom to
user- scalable - Whether the user can manually scale
to remove the default Apple toolbar and menu bar. content has two values "yes" and "no". When we need to display the toolbar and menu bar, there is no need to add this line of meta. The default is to display it.
After adding to the home screen, "display full screen
"
The function is to control the status bar display style status-bar-style: black dark black status-bar-style: black-translucent light gray
Ignore the recognition of email addresses in the Android platform
Disable page caching
Default on iPhone Yes (the phone number is displayed as a dial-up hyperlink):
You can set telephone=no, then the mobile phone number is not displayed as a dial-up link
iOS devices are private to the meta definition Attributes: (can be added to the home screen)
The website enables support for web app programs.
The color of the status bar (top bar of the screen) in web app applications;
The default value is default (white), which can be set to black (black) and black-translucent (gray translucent).
If the value is "black-translucent", it will occupy the px position of the page and float above the page (it will cover the 20px height of the page - the Retina screen of iphone4 and itouch4 is 40px).

HTML5 brings five key improvements: 1. Semantic tags improve code clarity and SEO effects; 2. Multimedia support simplifies video and audio embedding; 3. Form enhancement simplifies verification; 4. Offline and local storage improves user experience; 5. Canvas and graphics functions enhance the visualization of web pages.

The core features of HTML5 include semantic tags, multimedia support, offline storage and local storage, and form enhancement. 1. Semantic tags such as, etc. to improve code readability and SEO effect. 2. Simplify multimedia embedding with labels. 3. Offline storage and local storage such as ApplicationCache and LocalStorage support network-free operation and data storage. 4. Form enhancement introduces new input types and verification properties to simplify processing and verification.

H5 provides a variety of new features and functions, greatly enhancing the capabilities of front-end development. 1. Multimedia support: embed media through and elements, no plug-ins are required. 2. Canvas: Use elements to dynamically render 2D graphics and animations. 3. Local storage: implement persistent data storage through localStorage and sessionStorage to improve user experience.

H5 and HTML5 are different concepts: HTML5 is a version of HTML, containing new elements and APIs; H5 is a mobile application development framework based on HTML5. HTML5 parses and renders code through the browser, while H5 applications need to run containers and interact with native code through JavaScript.

Key elements of HTML5 include,,,,,, etc., which are used to build modern web pages. 1. Define the head content, 2. Used to navigate the link, 3. Represent the content of independent articles, 4. Organize the page content, 5. Display the sidebar content, 6. Define the footer, these elements enhance the structure and functionality of the web page.

There is no difference between HTML5 and H5, which is the abbreviation of HTML5. 1.HTML5 is the fifth version of HTML, which enhances the multimedia and interactive functions of web pages. 2.H5 is often used to refer to HTML5-based mobile web pages or applications, and is suitable for various mobile devices.

HTML5 is the latest version of the Hypertext Markup Language, standardized by W3C. HTML5 introduces new semantic tags, multimedia support and form enhancements, improving web structure, user experience and SEO effects. HTML5 introduces new semantic tags, such as, ,, etc., to make the web page structure clearer and the SEO effect better. HTML5 supports multimedia elements and no third-party plug-ins are required, improving user experience and loading speed. HTML5 enhances form functions and introduces new input types such as, etc., which improves user experience and form verification efficiency.

How to write clean and efficient HTML5 code? The answer is to avoid common mistakes by semanticizing tags, structured code, performance optimization and avoiding common mistakes. 1. Use semantic tags such as, etc. to improve code readability and SEO effect. 2. Keep the code structured and readable, using appropriate indentation and comments. 3. Optimize performance by reducing unnecessary tags, using CDN and compressing code. 4. Avoid common mistakes, such as the tag not closed, and ensure the validity of the code.


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