This page is built using H5 technologies and is responsive across devices.<\/p>\n <\/div>\n<\/body>\n<\/html><\/pre>
This example shows how to use HTML5 and CSS3 to create a simple responsive web page.<\/p>
The working principle of H5 depends on the collaborative work of HTML5, CSS3 and JavaScript. HTML5 provides structure and semantics, CSS3 is responsible for style and layout, and JavaScript is responsible for interactive and dynamic content. Together, they form a powerful technology stack that enables developers to create a rich and diverse web application.<\/p>
In terms of implementation principle, the core of the H5 technology stack is to use the browser's rendering engine and JavaScript engine to process and display web page content. In terms of time complexity and memory management, the optimization of the H5 technology stack mainly depends on the performance optimization of the browser and the quality of code written by developers.<\/p>
The basic usage of H5 is very simple. Here is a simple example showing how to use the new features of HTML5 to create a webpage with video:<\/p>
\n\n\n \n \nVideo Example<\/title>\n<\/head>\n<body> <h1><a href="http://ipnx.cn/">亚洲国产日韩欧美一区二区三区,精品亚洲国产成人av在线,国产99视频精品免视看7,99国产精品久久久久久久成人热,欧美日韩亚洲国产综合乱</a></h1>\n <video width=\"320\" height=\"240\" controls>\n <source src=\"movie.mp4\" type=\"video\/mp4\">\n Your browser does not support the video tag.\n <\/video>\n<\/body>\n<\/html><\/pre><p> This example shows how to use HTML5's <code><video><\/code> tag to embed videos and provide basic controls.<\/p><h3> Advanced Usage<\/h3><p> Advanced usage of H5 can involve more complex interactions and features, and here is an example of drawing dynamic graphics using the Canvas API:<\/p><pre class='brush:php;toolbar:false;'> <!DOCTYPE html>\n<html lang=\"en\">\n<head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n <title>Canvas Example<\/title>\n <style>\n canvas {\n border: 1px solid black;\n }\n <\/style>\n<\/head>\n<body>\n <canvas id=\"myCanvas\" width=\"500\" height=\"300\"><\/canvas>\n\n <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body data-commit-time="2023-12-28T14:50:12+08:00" class="editor_body body2_2"> <link rel="stylesheet" type="text/css" href="/static/csshw/stylehw.css"> <header> <div id="wjcelcm34c" class="head"> <div id="wjcelcm34c" class="haed_left"> <div id="wjcelcm34c" class="haed_logo"> <a href="http://ipnx.cn/" title="" class="haed_logo_a"> <img src="/static/imghw/logo.png" alt="" class="haed_logoimg"> </a> </div> <div id="wjcelcm34c" class="head_nav"> <div id="wjcelcm34c" class="head_navs"> <a href="javascript:;" title="Community" class="head_nava head_nava-template1">Community</a> <div class="wjcelcm34c" id="dropdown-template1" style="display: none;"> <div id="wjcelcm34c" class="languagechoose"> <a href="http://ipnx.cn/article.html" title="Articles" 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</div> <div style="display: block;" id="reg" class="head_signup login"> <a href="javascript:;" title="singup" class="head_signupa">singup</a> </div> </div> </div> </header> <main> <div id="wjcelcm34c" class="Article_Details_main"> <div id="wjcelcm34c" class="Article_Details_main1"> <div id="wjcelcm34c" class="Article_Details_main1L"> <div id="wjcelcm34c" class="Article_Details_main1Lmain" id="Article_Details_main1Lmain"> <div id="wjcelcm34c" class="Article_Details_main1L1">Table of Contents</div> <div id="wjcelcm34c" class="Article_Details_main1L2" id="Article_Details_main1L2"> <!-- 左側(cè)懸浮，文章定位標(biāo)題1 id="Article_Details_main1L2s_1"--> <div id="wjcelcm34c" class="Article_Details_main1L2s "> <a href="#introduction" title=" introduction" > introduction</a> </div> <div id="wjcelcm34c" class="Article_Details_main1L2s "> <a href="#Review-of-basic-knowledge" title=" Review of basic knowledge" > Review of basic knowledge</a> </div> <div id="wjcelcm34c" class="Article_Details_main1L2s "> <a href="#Core-concept-or-function-analysis" title=" Core concept or function analysis" > Core concept or function analysis</a> </div> <div id="wjcelcm34c" class="Article_Details_main1L2s "> <a href="#Definition-and-function-of-H" title=" Definition and function of H5" > Definition and function of H5</a> </div> <div id="wjcelcm34c" class="Article_Details_main1L2s "> <a href="#How-it-works" title=" How it works" > How it works</a> </div> <div id="wjcelcm34c" class="Article_Details_main1L2s "> <a href="#Example-of-usage" title=" Example of usage" > Example of usage</a> </div> <div id="wjcelcm34c" class="Article_Details_main1L2s "> <a href="#Basic-usage" title=" Basic usage" > Basic usage</a> </div> <div id="wjcelcm34c" class="Article_Details_main1L2s "> <a href="#Advanced-Usage" title=" Advanced Usage" > Advanced Usage</a> </div> <div id="wjcelcm34c" class="Article_Details_main1L2s "> <a href="#Common-Errors-and-Debugging-Tips" title=" Common Errors and Debugging Tips" > Common Errors and Debugging Tips</a> </div> <div id="wjcelcm34c" class="Article_Details_main1L2s "> <a href="#Performance-optimization-and-best-practices" title=" Performance optimization and best practices" > Performance optimization and best practices</a> </div> </div> </div> </div> <div id="wjcelcm34c" class="Article_Details_main1M"> <div id="wjcelcm34c" class="phpgenera_Details_mainL1"> <a href="http://ipnx.cn/" title="Home" class="phpgenera_Details_mainL1a">Home</a> <img src="/static/imghw/top_right.png" alt="" /> <a href="http://ipnx.cn/web-designer.html" class="phpgenera_Details_mainL1a">Web Front-end</a> <img src="/static/imghw/top_right.png" alt="" /> <a href="http://ipnx.cn/html5-tutorial.html" class="phpgenera_Details_mainL1a">H5 Tutorial</a> <img src="/static/imghw/top_right.png" alt="" /> <span>Is H5 a Shorthand for HTML5? Exploring the Details</span> </div> <div id="wjcelcm34c" class="Articlelist_txts"> <div id="wjcelcm34c" class="Articlelist_txts_info"> <h1 class="Articlelist_txts_title">Is H5 a Shorthand for HTML5? Exploring the Details</h1> <div id="wjcelcm34c" class="Articlelist_txts_info_head"> <div id="wjcelcm34c" class="author_info"> <a href="http://ipnx.cn/member/1468487.html" class="author_avatar"> <img class="lazy" data-src="https://img.php.cn/upload/avatar/000/000/001/66ea837dc2fb1336.png" src="/static/imghw/default1.png" alt="Karen Carpenter"> </a> <div id="wjcelcm34c" class="author_detail"> <a href="http://ipnx.cn/member/1468487.html" class="author_name">Karen Carpenter</a> </div> </div> </div> <span id="wjcelcm34c" class="Articlelist_txts_time">Apr 14, 2025 am 12:05 AM</span> <div id="wjcelcm34c" class="Articlelist_txts_infos"> <span id="wjcelcm34c" class="Articlelist_txts_infoss on">h5</span> <span id="wjcelcm34c" class="Articlelist_txts_infoss ">html5</span> </div> </div> </div> <hr /> <div id="wjcelcm34c" class="article_main php-article"> <div id="wjcelcm34c" class="article-list-left detail-content-wrap content"> <ins class="adsbygoogle" style="display:block; text-align:center;" data-ad-layout="in-article" data-ad-format="fluid" data-ad-client="ca-pub-5902227090019525" data-ad-slot="3461856641"> </ins> <p>H5 is not just the abbreviation of HTML5, it represents a wider modern web development technology ecosystem: 1. H5 includes HTML5, CSS3, JavaScript and related APIs and technologies; 2. It provides a richer, interactive and smooth user experience, and can run seamlessly on multiple devices; 3. Using the H5 technology stack, you can create responsive web pages and complex interactive functions.</p> <h2 id="introduction"> introduction</h2> <p> Is H5 really the abbreviation of HTML5? When you hear the word H5, you may immediately think that it is the short name for HTML5, but in fact, the question is not that simple. Today we will discuss the relationship between H5 and HTML5 in depth, as well as their differences and connections in practical applications. Through this article, you will learn that H5 is not only the abbreviation of HTML5, it also represents a broader concept and technology ecosystem.</p> <h2 id="Review-of-basic-knowledge"> Review of basic knowledge</h2> <p> Before we dive into H5 and HTML5, we will briefly review the relevant basics. HTML (HyperText Markup Language) is the core markup language of web pages, which defines the content and structure of web pages. With the development of network technology, HTML has undergone multiple version updates, and HTML5 is one of the important milestones, which introduces many new features and improvements.</p> <p> H5 as a term is often considered abbreviation for HTML5, but it covers more in actual use. It includes not only HTML5, but also CSS3, JavaScript and related APIs and technologies. Together, these technologies form the basis of modern web development.</p> <h2 id="Core-concept-or-function-analysis"> Core concept or function analysis</h2> <h3 id="Definition-and-function-of-H"> Definition and function of H5</h3> <p> H5 is not a formal standard term, but it is widely used in the industry and usually refers to a modern web development technology stack based on HTML5. Its function is to provide a richer, more interactive and smoother user experience. The advantage of the H5 is that it can run seamlessly on a variety of devices, from desktop computers to mobile devices, and even smart TVs.</p> <p> To give a simple example, suppose you want to create a responsive web page, using the H5 technology stack, you can easily achieve this goal:</p><pre class='brush:php;toolbar:false;'> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Responsive Web Page</title> <style> body { font-family: Arial, sans-serif; margin: 0; padding: 0; } .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 20px; } @media (max-width: 768px) { .container { padding: 10px; } } </style> </head> <body> <div class="container"> <h1>Welcome to My Responsive Web Page</h1> <p>This page is built using H5 technologies and is responsive across devices.</p> </div> </body> </html></pre><p> This example shows how to use HTML5 and CSS3 to create a simple responsive web page.</p><h3 id="How-it-works"> How it works</h3><p> The working principle of H5 depends on the collaborative work of HTML5, CSS3 and JavaScript. HTML5 provides structure and semantics, CSS3 is responsible for style and layout, and JavaScript is responsible for interactive and dynamic content. Together, they form a powerful technology stack that enables developers to create a rich and diverse web application.</p><p> In terms of implementation principle, the core of the H5 technology stack is to use the browser's rendering engine and JavaScript engine to process and display web page content. In terms of time complexity and memory management, the optimization of the H5 technology stack mainly depends on the performance optimization of the browser and the quality of code written by developers.</p><h2 id="Example-of-usage"> Example of usage</h2><h3 id="Basic-usage"> Basic usage</h3><p> The basic usage of H5 is very simple. Here is a simple example showing how to use the new features of HTML5 to create a webpage with video:</p><pre class='brush:php;toolbar:false;'> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Video Example</title> </head> <body> <video width="320" height="240" controls> <source src="movie.mp4" type="video/mp4"> Your browser does not support the video tag. </video> </body> </html></pre><p> This example shows how to use HTML5's <code><video></code> tag to embed videos and provide basic controls.</p><h3 id="Advanced-Usage"> Advanced Usage</h3><p> Advanced usage of H5 can involve more complex interactions and features, and here is an example of drawing dynamic graphics using the Canvas API:</p><pre class='brush:php;toolbar:false;'> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Canvas Example</title> <style> canvas { border: 1px solid black; } </style> </head> <body> <canvas id="myCanvas" width="500" height="300"></canvas> <script> var canvas = document.getElementById('myCanvas'); var ctx = canvas.getContext('2d'); function draw() { ctx.clearRect(0, 0, canvas.width, canvas.height); var time = new Date(); ctx.beginPath(); ctx.arc(250, 150, 100, 0, 2 * Math.PI * time.getSeconds() / 60); ctx.stroke(); requestAnimationFrame(draw); } draw(); </script> </body> </html></pre><p> This example shows how to use the Canvas API to draw a dynamic circle with the angle of the circle changing over time.</p> <h3 id="Common-Errors-and-Debugging-Tips"> Common Errors and Debugging Tips</h3> <p> Common errors when using the H5 technology stack include browser compatibility issues, performance issues, and code errors. Here are some debugging tips:</p> <ul> <li> <strong>Browser compatibility issues</strong> : Use the Can I Use website to check the support of HTML5, CSS3 and JavaScript features in different browsers.</li> <li> <strong>Performance issues</strong> : Use browser developer tools to analyze web page loading time and performance bottlenecks, optimize code and resource loading.</li> <li> <strong>Code Error</strong> : Use console output and breakpoint debugging to locate and fix errors in the code.</li> </ul> <h2 id="Performance-optimization-and-best-practices"> Performance optimization and best practices</h2> <p> In practical applications, how to optimize the performance of the H5 technology stack is a key issue. Here are some optimization suggestions:</p> <ul> <li> <strong>Code Compression and Merge</strong> : Use tools to compress and merge HTML, CSS, and JavaScript files to reduce loading time.</li> <li> <strong>Lazy Loading</strong> : For resources such as pictures and videos, use lazy loading technology and only load when needed.</li> <li> <strong>Caching strategy</strong> : Use browser cache reasonably to reduce duplicate loading of resources.</li> </ul> <p> It is important to keep the code readable and maintained in terms of programming habits and best practices. Here are some suggestions:</p> <ul> <li> <strong>Use semantic tags</strong> : Use HTML5 semantic tags, such as <code><header></header></code> , <code><footer></footer></code> , <code><nav></nav></code> , etc. to improve the readability and SEO-friendliness of code.</li> <li> <strong>Modular development</strong> : divide the code into different modules for easy maintenance and reuse.</li> <li> <strong>Version control</strong> : Use version control tools such as Git to manage code versions and collaborative development.</li> </ul> <p> Through these methods, you can better utilize the H5 technology stack to create high-performance and high-quality web applications.</p> <p> In general, H5 is not just the abbreviation of HTML5, it represents a broader ecosystem of modern web development technology. Through this discussion, you should have a deeper understanding of H5 and master some practical development techniques and best practices.</p><p>The above is the detailed content of Is H5 a Shorthand for HTML5? Exploring the Details. For more information, please follow other related articles on the PHP Chinese website!</p> </div> </div> <div id="wjcelcm34c" class="wzconShengming_sp"> <div id="wjcelcm34c" class="bzsmdiv_sp">Statement of this Website</div> <div>The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. 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These measures can improve application stability and user experience.</p> </div> <div id="wjcelcm34c" class="phphistorical_Version2_mids"> <a href="http://ipnx.cn/faq/1796835653.html" title="Integrating CSS and JavaScript effectively with HTML5 structure." class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175226046128038.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Integrating CSS and JavaScript effectively with HTML5 structure." /> </a> <a href="http://ipnx.cn/faq/1796835653.html" title="Integrating CSS and JavaScript effectively with HTML5 structure." class="phphistorical_Version2_mids_title">Integrating CSS and JavaScript effectively with HTML5 structure.</a> <span id="wjcelcm34c" class="Articlelist_txts_time">Jul 12, 2025 am 03:01 AM</span> <p class="Articlelist_txts_p">HTML5, CSS and JavaScript should be efficiently combined with semantic tags, reasonable loading order and decoupling design. 1. Use HTML5 semantic tags, such as improving structural clarity and maintainability, which is conducive to SEO and barrier-free access; 2. CSS should be placed in, use external files and split by module to avoid inline styles and delayed loading problems; 3. JavaScript is recommended to be introduced in front, and use defer or async to load asynchronously to avoid blocking rendering; 4. Reduce strong dependence between the three, drive behavior through data-* attributes and class name control status, and improve collaboration efficiency through unified naming specifications. These methods can effectively optimize page performance and collaborate with teams.</p> </div> <div id="wjcelcm34c" class="phphistorical_Version2_mids"> <a href="http://ipnx.cn/faq/1796829178.html" title="Declaring the correct HTML5 doctype for modern pages." class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175148132111973.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Declaring the correct HTML5 doctype for modern pages." /> </a> <a href="http://ipnx.cn/faq/1796829178.html" title="Declaring the correct HTML5 doctype for modern pages." class="phphistorical_Version2_mids_title">Declaring the correct HTML5 doctype for modern pages.</a> <span id="wjcelcm34c" class="Articlelist_txts_time">Jul 03, 2025 am 02:35 AM</span> <p class="Articlelist_txts_p">Doctype is a statement that tells the browser which HTML standard to use to parse the page. Modern web pages only need to be written at the beginning of the HTML file. Its function is to ensure that the browser renders the page in standard mode rather than weird mode, and must be located on the first line, with no spaces or comments in front of it; there is only one correct way to write it, and it is not recommended to use old versions or other variants; other such as charset, viewport, etc. should be placed in part.</p> </div> <div id="wjcelcm34c" class="phphistorical_Version2_mids"> <a href="http://ipnx.cn/faq/1796835678.html" title="Explaining the HTML5 `` vs `` elements." class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175226098195845.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Explaining the HTML5 `` vs `` elements." /> </a> <a href="http://ipnx.cn/faq/1796835678.html" title="Explaining the HTML5 `` vs `` elements." class="phphistorical_Version2_mids_title">Explaining the HTML5 `` vs `` elements.</a> <span id="wjcelcm34c" class="Articlelist_txts_time">Jul 12, 2025 am 03:09 AM</span> <p class="Articlelist_txts_p">It is a block-level element, suitable for layout; it is an inline element, suitable for wrapping text content. 1. Exclusively occupy a line, width, height and margins can be set, which are often used in structural layout; 2. No line breaks, the size is determined by the content, and is suitable for local text styles or dynamic operations; 3. When choosing, it should be judged based on whether the content needs independent space; 4. It cannot be nested and is not suitable for layout; 5. Priority is given to the use of semantic labels to improve structural clarity and accessibility.</p> </div> <div id="wjcelcm34c" class="phphistorical_Version2_mids"> <a href="http://ipnx.cn/faq/1796832585.html" title="Understanding HTML5 Media Source Extensions (MSE)" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175191311266895.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Understanding HTML5 Media Source Extensions (MSE)" /> </a> <a href="http://ipnx.cn/faq/1796832585.html" title="Understanding HTML5 Media Source Extensions (MSE)" class="phphistorical_Version2_mids_title">Understanding HTML5 Media Source Extensions (MSE)</a> <span id="wjcelcm34c" class="Articlelist_txts_time">Jul 08, 2025 am 02:31 AM</span> <p class="Articlelist_txts_p">MSE (MediaSourceExtensions) is part of the W3C standard, allowing JavaScript to dynamically build media streams, thus enabling advanced video playback capabilities. It manages media sources through MediaSource, stores data from SourceBuffer, and represents the buffering time range through TimeRanges, allowing the browser to dynamically load and decode video clips. The process of using MSE includes: ① Create a MediaSource instance; ② Bind it to an element; ③ Add SourceBuffer to receive data in a specific format; ④ Get segmented data through fetch() and append it to the buffer. Common precautions include: ① Format compatibility issues; ② Time stamp pair</p> </div> <div id="wjcelcm34c" class="phphistorical_Version2_mids"> <a href="http://ipnx.cn/faq/1796832574.html" title="Submitting Form Data Using New HTML5 Methods (FormData)" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175191288234525.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Submitting Form Data Using New HTML5 Methods (FormData)" /> </a> <a href="http://ipnx.cn/faq/1796832574.html" title="Submitting Form Data Using New HTML5 Methods (FormData)" class="phphistorical_Version2_mids_title">Submitting Form Data Using New HTML5 Methods (FormData)</a> <span id="wjcelcm34c" class="Articlelist_txts_time">Jul 08, 2025 am 02:28 AM</span> <p class="Articlelist_txts_p">It is more convenient to submit form data using HTML5's FormData API. 1. It can automatically collect form fields with name attribute or manually add data; 2. It supports submission in multipart/form-data format through fetch or XMLHttpRequest, which is suitable for file upload; 3. When processing files, you only need to append the file to FormData and send a request; 4. Note that the same name field will be overwritten, and JSON conversion and no nesting structure need to be handled.</p> </div> <div id="wjcelcm34c" class="phphistorical_Version2_mids"> <a href="http://ipnx.cn/faq/1796835672.html" title="What are the new input types available in HTML5 forms?" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175226085267246.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="What are the new input types available in HTML5 forms?" /> </a> <a href="http://ipnx.cn/faq/1796835672.html" title="What are the new input types available in HTML5 forms?" class="phphistorical_Version2_mids_title">What are the new input types available in HTML5 forms?</a> <span id="wjcelcm34c" class="Articlelist_txts_time">Jul 12, 2025 am 03:07 AM</span> <p class="Articlelist_txts_p">HTML5introducednewinputtypesthatenhanceformfunctionalityanduserexperiencebyimprovingvalidation,UI,andmobilekeyboardlayouts.1.emailvalidatesemailaddressesandsupportsmultipleentries.2.urlchecksforvalidwebaddressesandtriggersURL-optimizedkeyboards.3.num</p> </div> <div id="wjcelcm34c" class="phphistorical_Version2_mids"> <a href="http://ipnx.cn/faq/1796836233.html" title="How to access user's current location with the HTML5 Geolocation API?" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175234461263683.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="How to access user's current location with the HTML5 Geolocation API?" /> </a> <a href="http://ipnx.cn/faq/1796836233.html" title="How to access user's current location with the HTML5 Geolocation API?" class="phphistorical_Version2_mids_title">How to access user's current location with the HTML5 Geolocation API?</a> <span id="wjcelcm34c" class="Articlelist_txts_time">Jul 13, 2025 am 02:23 AM</span> <p class="Articlelist_txts_p">To get the user's current location, use the HTML5 GeolocationAPI. This API provides information such as latitude and longitude after user authorization. The core method is getCurrentPosition(), which requires successful and error callbacks to be handled; at the same time, pay attention to the HTTPS prerequisite, user authorization mechanism and error code processing. ① Call getCurrentPosition to get the position once, and an error callback will be triggered if it fails; ② The user must authorize it, otherwise it cannot be obtained and may no longer be prompted; ③ Error processing should distinguish between rejection, timeout, location unavailable, etc.; ④ Enable high-precision, set timeout time, etc., and can be configured through the third parameter; ⑤ The online environment must use HTTPS, otherwise it may be restricted by the browser.</p> </div> </div> <a href="http://ipnx.cn/web-designer.html" class="phpgenera_Details_mainL4_botton"> <span>See all articles</span> <img src="/static/imghw/down_right.png" alt="" /> </a> </div> </div> </div> </main> <footer> <div id="wjcelcm34c" class="footer"> <div id="wjcelcm34c" class="footertop"> <img src="/static/imghw/logo.png" alt=""> <p>Public welfare online PHP training，Help PHP learners grow quickly！</p> </div> <div id="wjcelcm34c" class="footermid"> <a href="http://ipnx.cn/about/us.html">About us</a> <a href="http://ipnx.cn/about/disclaimer.html">Disclaimer</a> <a href="http://ipnx.cn/update/article_0_1.html">Sitemap</a> </div> <div id="wjcelcm34c" class="footerbottom"> <p> ? php.cn All rights reserved </p> </div> </div> </footer> <input type="hidden" id="verifycode" value="/captcha.html"> <link rel='stylesheet' id='_main-css' href='/static/css/viewer.min.css?2' type='text/css' media='all' /> <footer> <div class="friendship-link"> <p>感谢您访问我们的网站，您可能还对以下资源感兴趣：</p> <a href="http://ipnx.cn/" title="亚洲国产日韩欧美一区二区三区">亚洲国产日韩欧美一区二区三区</a> <div class="friend-links"> </div> </div> </footer> <script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </script> </body><div id="ynlfv" class="pl_css_ganrao" style="display: none;"><p id="ynlfv"></p><th id="ynlfv"></th><font id="ynlfv"></font><dfn id="ynlfv"></dfn><u id="ynlfv"><rp id="ynlfv"><delect id="ynlfv"><pre id="ynlfv"></pre></delect></rp></u><object id="ynlfv"></object><tbody id="ynlfv"><strike id="ynlfv"></strike></tbody><address id="ynlfv"><div id="ynlfv"><rt id="ynlfv"></rt></div></address><menuitem id="ynlfv"><form id="ynlfv"><legend id="ynlfv"><s id="ynlfv"></s></legend></form></menuitem><big id="ynlfv"></big><samp id="ynlfv"><form id="ynlfv"></form></samp><delect id="ynlfv"><small id="ynlfv"></small></delect><dl id="ynlfv"><div id="ynlfv"><menuitem id="ynlfv"></menuitem></div></dl><th id="ynlfv"><code id="ynlfv"></code></th><small id="ynlfv"><style id="ynlfv"></style></small><track id="ynlfv"><u id="ynlfv"><ins id="ynlfv"><font id="ynlfv"></font></ins></u></track><input id="ynlfv"><code id="ynlfv"><optgroup id="ynlfv"><li id="ynlfv"></li></optgroup></code></input><object id="ynlfv"><s id="ynlfv"></s></object><abbr id="ynlfv"><small id="ynlfv"><ol id="ynlfv"></ol></small></abbr><meter id="ynlfv"><legend id="ynlfv"><style id="ynlfv"></style></legend></meter><p id="ynlfv"></p><em id="ynlfv"><ins id="ynlfv"><xmp id="ynlfv"><tfoot id="ynlfv"></tfoot></xmp></ins></em><th id="ynlfv"><xmp id="ynlfv"><tt id="ynlfv"></tt></xmp></th><strong id="ynlfv"></strong><big id="ynlfv"></big><object id="ynlfv"><dfn id="ynlfv"><span id="ynlfv"></span></dfn></object><legend id="ynlfv"></legend><acronym id="ynlfv"></acronym><u id="ynlfv"><menu id="ynlfv"></menu></u><ul id="ynlfv"><center id="ynlfv"><progress id="ynlfv"></progress></center></ul><div id="ynlfv"></div><del id="ynlfv"><xmp id="ynlfv"></xmp></del><optgroup id="ynlfv"></optgroup><output id="ynlfv"><em id="ynlfv"><menuitem id="ynlfv"><thead id="ynlfv"></thead></menuitem></em></output><thead id="ynlfv"><object id="ynlfv"><bdo id="ynlfv"><form id="ynlfv"></form></bdo></object></thead><option id="ynlfv"></option><label id="ynlfv"><em id="ynlfv"></em></label><dd id="ynlfv"></dd><center id="ynlfv"><acronym id="ynlfv"><optgroup id="ynlfv"></optgroup></acronym></center><form id="ynlfv"><font id="ynlfv"></font></form><form id="ynlfv"></form><th id="ynlfv"><blockquote id="ynlfv"><font id="ynlfv"><del id="ynlfv"></del></font></blockquote></th><em id="ynlfv"></em><b id="ynlfv"></b><td id="ynlfv"><big id="ynlfv"></big></td><sub id="ynlfv"><tfoot id="ynlfv"></tfoot></sub><optgroup id="ynlfv"><track id="ynlfv"><output id="ynlfv"></output></track></optgroup><th id="ynlfv"><s id="ynlfv"><code id="ynlfv"><optgroup id="ynlfv"></optgroup></code></s></th></div> </html>