


Xiaoqiang's HTML5 mobile development road (50) - jquerymobile page initialization process
In order to facilitate explanation and more intuitively display the page initialization process of jquerymobile and the triggering process of each event, I drew a flow chart:
Figure The events circled in red boxes in the interface are the events in the interface. The test code is as follows:
<!DOCTYPE html> <html> <head> <title>练习</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0;" /> <link href="css/jquery.mobile-1.0.1.min.css" rel="stylesheet" type="text/css"/> <script src="js/jquery-1.6.4.js" type="text/javascript" ></script> <script src="js/jquery.mobile-1.0.1.js" type="text/javascript" ></script> <script> $(document).ready(function(e){ alert("document.ready被触发"); }); $(document).live("mobileinit", function(){ alert("mobileinit事件触发"); }); $(document).delegate("#page_MobileInit0", "pageinit", function(){ alert("page_MobileInit0页面的pageinit事件被触发"); }); $(document).delegate("#page_MobileInit0", "pageshow", function(){ alert("page_MobileInit0页面的pageshow事件被触发"); }); $(document).delegate("#page_MobileInit1", "pageinit", function(){ alert("page_MobileInit1页面的pageinit事件被触发"); }); $(document).delegate("#page_MobileInit1", "pageshow", function(){ alert("page_MobileInit1页面的pageshow事件被触发"); }); </script> </head> <body> <section id="page_MobileInit0" data-role="page"> <header data-role="header"> <h1 id="页面事件">页面事件</h1> </header> <p class="content" data-role="content"> <p>jQuery Mobile页面初始化是通过mobileinit、$(document).ready()以及pageinit实现的</p> <a href="#" onclick="$(document).trigger('mobileinit')">手动触发mobileinit事件</a> <a href="#page_MobileInit1">下一页</a><br/></p> </p> </section> <section id="page_MobileInit1" data-role="page"> <header data-role="header"> <h1 id="页面事件">页面事件</h1> </header> <p class="content" data-role="content"> <p>jQuery Mobile页面初始化是通过pageinit实现的<br/> <a href="#page_MobileInit0">返回</a></p> </p> </section> </body> </html>
In addition to the events introduced above, there is also the onload event. The onload event is triggered when all relevant content (including images) is loaded. Because of the influence of images and other content, the onload event is triggered later. Although the onload event is also used in page development, in jQuery Mobile development, three initialization events, mobileinit, ready() and pageinit, are mainly used.
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MicrodatainHTML5enhancesSEOanduserexperiencebyprovidingstructureddatatosearchengines.1)Useitemscope,itemtype,anditempropattributestomarkupcontentlikeproductsorevents.2)TestmicrodatawithtoolslikeGoogle'sStructuredDataTestingTool.3)ConsiderusingJSON-LD

HTML5introducesnewinputtypesthatenhanceuserexperience,simplifydevelopment,andimproveaccessibility.1)automaticallyvalidatesemailformat.2)optimizesformobilewithanumerickeypad.3)andsimplifydateandtimeinputs,reducingtheneedforcustomsolutions.

H5 is HTML5, the fifth version of HTML. HTML5 improves the expressiveness and interactivity of web pages, introduces new features such as semantic tags, multimedia support, offline storage and Canvas drawing, and promotes the development of Web technology.

Accessibility and compliance with network standards are essential to the website. 1) Accessibility ensures that all users have equal access to the website, 2) Network standards follow to improve accessibility and consistency of the website, 3) Accessibility requires the use of semantic HTML, keyboard navigation, color contrast and alternative text, 4) Following these principles is not only a moral and legal requirement, but also amplifying user base.

The H5 tag in HTML is a fifth-level title that is used to tag smaller titles or sub-titles. 1) The H5 tag helps refine content hierarchy and improve readability and SEO. 2) Combined with CSS, you can customize the style to enhance the visual effect. 3) Use H5 tags reasonably to avoid abuse and ensure the logical content structure.

The methods of building a website in HTML5 include: 1. Use semantic tags to define the web page structure, such as, , etc.; 2. Embed multimedia content, use and tags; 3. Apply advanced functions such as form verification and local storage. Through these steps, you can create a modern web page with clear structure and rich features.

A reasonable H5 code structure allows the page to stand out among a lot of content. 1) Use semantic labels such as, etc. to organize content to make the structure clear. 2) Control the rendering effect of pages on different devices through CSS layout such as Flexbox or Grid. 3) Implement responsive design to ensure that the page adapts to different screen sizes.

The main differences between HTML5 (H5) and older versions of HTML include: 1) H5 introduces semantic tags, 2) supports multimedia content, and 3) provides offline storage functions. H5 enhances the functionality and expressiveness of web pages through new tags and APIs, such as and tags, improving user experience and SEO effects, but need to pay attention to compatibility issues.


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