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What does an html file consist of?

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Apr 11, 2024 am 04:19 AM

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HTML files are composed of the following elements: document type declaration element element (contains metadata) element (defines the title) <body> element (contains visible content) HTML elements (define content type) Attributes (modify behavior or appearance) Comments (add instructions) Scripts (add interactivity) Styles (define visual presentation) </p></blockquote> <p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/202404/11/2024041104195362679.jpg" class="lazy" alt="What does an html file consist of?" ></p> <p><strong>Composition of HTML files</strong></p> <p>HTML (Hypertext Markup Language) files are the basis for web pages. It defines the content, layout and structure of a web page. HTML files are composed of the following elements:</p> <p><strong>1. Document type declaration</strong></p> <p>Every HTML file begins with a document type declaration, which declares the HTML version of the file. For example: </p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><!DOCTYPE html></pre><div class="contentsignin">Copy after login</div></div><p><strong>2. <html> element </strong></p> <p><html> element is the root element of the HTML file, which contains all the content of the entire web page. </p> <p><strong>3. <head> element</strong></p> <p>The<head> element contains metadata for the web page, such as page title, description, and links. </p> <p><strong>4. <title> element </strong></p> <p><title> element defines the title of the web page, which will be displayed in the browser's tab bar. </p> <p><strong>5. The <body> element</strong></p> <p>The<body> element contains the visible content of the web page, such as text, images, and videos. </p> <p><strong>6. HTML Elements </strong></p> <p>HTML elements are used to define different content types, such as paragraphs, headings, lists, and links. </p> <p><strong>7. Attributes </strong></p> <p>HTML elements can use attributes to modify their behavior or appearance. For example, the align attribute of the <p> element can be used to align paragraphs. </p> <p><strong>8. Comments</strong></p> <p>HTML comments can add instructions in the HTML code. These comments will not be displayed on the web page. Comments use the  symbols. </p> <p><strong>9. Scripts</strong></p> <p>HTML files can contain scripts, such as JavaScript, that are used to add interactivity to web pages. </p> <p><strong>10. Styles</strong></p> <p>HTML files can use style sheets (such as CSS) to define the visual presentation of a web page, such as fonts, colors, and layout. </p><p>The above is the detailed content of What does an html file consist of?. 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To ensure that the application is compatible with multiple browsers, developers often need to conduct cross-browser testing and use responsiveness</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/1796788844.html" title="How to convert XML to PDF on Android phone?" 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/202412/24/2024122417451877309.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="How to convert XML to PDF on Android phone?" /> </a> <a href="https://www.php.cn/faq/1796788844.html" title="How to convert XML to PDF on Android phone?" class="phphistorical_Version2_mids_title">How to convert XML to PDF on Android phone?</a> <span class="Articlelist_txts_time">Apr 02, 2025 pm 09:51 PM</span> <p class="Articlelist_txts_p">Converting XML to PDF directly on Android phones cannot be achieved through the built-in features. You need to save the country through the following steps: convert XML data to formats recognized by the PDF generator (such as text or HTML); convert HTML to PDF using HTML generation libraries such as Flying Saucer.</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/1796787695.html" title="How to solve the problem of style loss after Django project is deployed to Pagoda panel?" 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/001/246/273/174268802859767.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="How to solve the problem of style loss after Django project is deployed to Pagoda panel?" /> </a> <a href="https://www.php.cn/faq/1796787695.html" title="How to solve the problem of style loss after Django project is deployed to Pagoda panel?" class="phphistorical_Version2_mids_title">How to solve the problem of style loss after Django project is deployed to Pagoda panel?</a> <span class="Articlelist_txts_time">Apr 01, 2025 pm 09:09 PM</span> <p class="Articlelist_txts_p">Detailed explanation of style loss after Django project is deployed to pagoda panel. After deploying Django project to pagoda panel, you may encounter style loss problem. This...</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/1796788882.html" title="How to display hidden lines in xml" 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/202408/02/2024080200395981863.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="How to display hidden lines in xml" /> </a> <a href="https://www.php.cn/faq/1796788882.html" title="How to display hidden lines in xml" class="phphistorical_Version2_mids_title">How to display hidden lines in xml</a> <span class="Articlelist_txts_time">Apr 02, 2025 pm 11:45 PM</span> <p class="Articlelist_txts_p">There are two common ways to hide rows in XML: Use the display property in CSS to set to none Use XSLT to skip hidden rows via conditional copying</p> </div> <div class="phphistorical_Version2_mids"> <a href="https://www.php.cn/faq/1796788883.html" title="How to display the content of the interface with xml" 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/202408/02/2024080200393899775.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="How to display the content of the interface with xml" /> </a> <a href="https://www.php.cn/faq/1796788883.html" title="How to display the content of the interface with xml" class="phphistorical_Version2_mids_title">How to display the content of the interface with xml</a> <span class="Articlelist_txts_time">Apr 02, 2025 pm 11:48 PM</span> <p class="Articlelist_txts_p">XML is widely used to build and manage user interfaces. It defines and displays the interface content through the following steps: Define interface elements: XML uses tags to define interface elements and their properties. Building a hierarchy: XML organizes interface elements according to hierarchical relationships to form a tree structure. Using Stylesheets: Developers use stylesheet languages such as CSS or XSL to specify the visual appearance and behavior of elements. Rendering process: A browser or application uses an XML parser and stylesheet to parse an XML file and render interface elements to make it visible on the screen.</p> </div> </div> <a href="https://www.php.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 class="footer"> <div class="footertop"> <img src="/static/imghw/logo.png" alt=""> <p>Public welfare online PHP training，Help PHP learners grow quickly！</p> </div> <div class="footermid"> <a href="https://www.php.cn/about/us.html">About us</a> <a href="https://www.php.cn/about/disclaimer.html">Disclaimer</a> <a href="https://www.php.cn/update/article_0_1.html">Sitemap</a> </div> <div class="footerbottom"> <p> © php.cn All rights reserved </p> </div> </div> </footer> <input type="hidden" id="verifycode" value="/captcha.html"> <script>layui.use(['element', 'carousel'], function () {var element = layui.element;$ = layui.jquery;var carousel = layui.carousel;carousel.render({elem: '#test1', width: '100%', height: '330px', arrow: 'always'});$.getScript('/static/js/jquery.lazyload.min.js', function () {$("img").lazyload({placeholder: "/static/images/load.jpg", effect: "fadeIn", threshold: 200, skip_invisible: false});});});</script> <script src="/static/js/common_new.js"></script> <script type="text/javascript" src="/static/js/jquery.cookie.js?1743822535"></script> <script src="https://vdse.bdstatic.com//search-video.v1.min.js"></script> <link rel='stylesheet' id='_main-css' href='/static/css/viewer.min.css?2' type='text/css' media='all' /> <script type='text/javascript' src='/static/js/viewer.min.js?1'></script> <script type='text/javascript' src='/static/js/jquery-viewer.min.js'></script> <script type="text/javascript" src="/static/js/global.min.js?5.5.53"></script> <script> var _paq = window._paq = window._paq || []; /* tracker methods like "setCustomDimension" should be called before "trackPageView" */ _paq.push(['trackPageView']); _paq.push(['enableLinkTracking']); (function () { var u = "https://tongji.php.cn/"; _paq.push(['setTrackerUrl', u + 'matomo.php']); _paq.push(['setSiteId', '9']); var d = document, g = d.createElement('script'), s = d.getElementsByTagName('script')[0]; g.async = true; g.src = u + 'matomo.js'; s.parentNode.insertBefore(g, s); })(); </script> <script> // top layui.use(function () { var util = layui.util; util.fixbar({ on: { mouseenter: function (type) { layer.tips(type, this, { tips: 4, fixed: true, }); }, mouseleave: function (type) { layer.closeAll("tips"); }, }, }); }); document.addEventListener("DOMContentLoaded", (event) => { // 定义一个函数来处理滚动链接的点击事件 function setupScrollLink(scrollLinkId, targetElementId) { const scrollLink = document.getElementById(scrollLinkId); const targetElement = document.getElementById(targetElementId); if (scrollLink && targetElement) { scrollLink.addEventListener("click", (e) => { e.preventDefault(); // 阻止默认链接行为 targetElement.scrollIntoView({ behavior: "smooth" }); // 平滑滚动到目标元素 }); } else { console.warn( `Either scroll link with ID '${scrollLinkId}' or target element with ID '${targetElementId}' not found.` ); } } // 使用该函数设置多个滚动链接 setupScrollLink("Article_Details_main1L2s_1", "article_main_title1"); setupScrollLink("Article_Details_main1L2s_2", "article_main_title2"); setupScrollLink("Article_Details_main1L2s_3", "article_main_title3"); setupScrollLink("Article_Details_main1L2s_4", "article_main_title4"); setupScrollLink("Article_Details_main1L2s_5", "article_main_title5"); setupScrollLink("Article_Details_main1L2s_6", "article_main_title6"); // 可以继续添加更多的滚动链接设置 }); window.addEventListener("scroll", function () { var fixedElement = document.getElementById("Article_Details_main1Lmain"); var scrollTop = window.scrollY || document.documentElement.scrollTop; // 兼容不同浏览器 var clientHeight = window.innerHeight || document.documentElement.clientHeight; // 视口高度 var scrollHeight = document.documentElement.scrollHeight; // 页面总高度 // 计算距离底部的距离 var distanceToBottom = scrollHeight - scrollTop - clientHeight; // 当距离底部小于或等于300px时，取消固定定位 if (distanceToBottom <= 980) { fixedElement.classList.remove("Article_Details_main1Lmain"); fixedElement.classList.add("Article_Details_main1Lmain_relative"); } else { // 否则，保持固定定位 fixedElement.classList.remove("Article_Details_main1Lmain_relative"); fixedElement.classList.add("Article_Details_main1Lmain"); } }); </script> </body> </html>