


Let the pre tag automatically wrap the sample code_HTML/Xhtml_Web page production
The pre element defines preformatted text. Text enclosed in a pre element usually preserves whitespace and newlines. The text will also be rendered as a fixed-width font. A common application of the
tag is to represent computer source code. For technical blogs, pre tags are often used to output code or code highlighting. By default, the content in the pre tag will not wrap automatically if it exceeds the range. <br>The following is a method to make the content in the <pre class="brush:php;toolbar:false"> tag automatically wrap and comply with W3C standards (multi-browser support) <br><br><div class="msgheader"> <div class="right"><span style="CURSOR: pointer" onclick="copycode(getid('phpcode32'));"><u>Copy code</u></span></div>The code is as follows:</div><div class="msgborder" id="phpcode32"> <br>pre{ <br>white-space:pre-wrap; /* css3.0 */ <br>white-space:-moz- pre-wrap; /* Firefox */ <br>white-space:-pre-wrap; /* Opera 4-6 */ <br>white-space:-o-pre-wrap; /* Opera 7 */ <br>word-wrap:break-word; /* Internet Explorer 5.5 */ <br>} <br> </div><br>Example: <br><br><div class="msgheader"> <div class="right"><span style="CURSOR: pointer" onclick="copycode(getid('phpcode33'));"><u> Copy the code </u></span></div>The code is as follows:</div><div class="msgborder" id="phpcode33"> <br>pre{white-space:pre-wrap; white-space:-moz-pre-wrap; white-space:-pre -wrap; white-space:-o-pre-wrap; word-wrap:break-word; /*I have a very, very long code. Did I break the line? */} <br> </div>

HTML code can be cleaner with online validators, integrated tools and automated processes. 1) Use W3CMarkupValidationService to verify HTML code online. 2) Install and configure HTMLHint extension in VisualStudioCode for real-time verification. 3) Use HTMLTidy to automatically verify and clean HTML files in the construction process.

HTML, CSS and JavaScript are the core technologies for building modern web pages: 1. HTML defines the web page structure, 2. CSS is responsible for the appearance of the web page, 3. JavaScript provides web page dynamics and interactivity, and they work together to create a website with a good user experience.

The function of HTML is to define the structure and content of a web page, and its purpose is to provide a standardized way to display information. 1) HTML organizes various parts of the web page through tags and attributes, such as titles and paragraphs. 2) It supports the separation of content and performance and improves maintenance efficiency. 3) HTML is extensible, allowing custom tags to enhance SEO.

The future trends of HTML are semantics and web components, the future trends of CSS are CSS-in-JS and CSSHoudini, and the future trends of JavaScript are WebAssembly and Serverless. 1. HTML semantics improve accessibility and SEO effects, and Web components improve development efficiency, but attention should be paid to browser compatibility. 2. CSS-in-JS enhances style management flexibility but may increase file size. CSSHoudini allows direct operation of CSS rendering. 3.WebAssembly optimizes browser application performance but has a steep learning curve, and Serverless simplifies development but requires optimization of cold start problems.

The roles of HTML, CSS and JavaScript in web development are: 1. HTML defines the web page structure, 2. CSS controls the web page style, and 3. JavaScript adds dynamic behavior. Together, they build the framework, aesthetics and interactivity of modern websites.

The future of HTML is full of infinite possibilities. 1) New features and standards will include more semantic tags and the popularity of WebComponents. 2) The web design trend will continue to develop towards responsive and accessible design. 3) Performance optimization will improve the user experience through responsive image loading and lazy loading technologies.

The roles of HTML, CSS and JavaScript in web development are: HTML is responsible for content structure, CSS is responsible for style, and JavaScript is responsible for dynamic behavior. 1. HTML defines the web page structure and content through tags to ensure semantics. 2. CSS controls the web page style through selectors and attributes to make it beautiful and easy to read. 3. JavaScript controls web page behavior through scripts to achieve dynamic and interactive functions.

HTMLisnotaprogramminglanguage;itisamarkuplanguage.1)HTMLstructuresandformatswebcontentusingtags.2)ItworkswithCSSforstylingandJavaScriptforinteractivity,enhancingwebdevelopment.


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