推荐教程:Html教程
简单的 HTML 表格由 table 元素以及一个或多个 tr、th 或 td 元素组成。 tr 元素定义表格行,th 元素定义表头,td 元素定义表格单元。 更复杂的 HTML 表格也可能包括 caption、col、colgroup、thead、tfoot 以及 tbody 元素。 可选的属性 left center right 不赞成使用。请使用样式代替。 规定表格相对周围元素的对齐方式。 rgb(x,x,x) #xxxxxx colorname 不赞成使用。请使用样式代替。 规定表格的背景颜色。 pixel s% pixel s% voi dabove below hsides lhs rhs vsides box border none groups rows cols all % pixels 标签定义 HTML 表格。
<table border="1">
<tr>
<th>Month</th>
<th>Savings</th>
</tr>
<tr>
<td>January</td>
<td>$100</td>
</tr></table>
属性
值
描述
align
bgcolor
border
pixels
规定表格边框的宽度。
cellpadding
规定单元边沿与其内容之间的空白。
cellspacing
规定单元格之间的空白。
frame
规定外侧边框的哪个部分是可见的。
rules
规定内侧边框的哪个部分是可见的。
summary
text
规定表格的摘要。
width
规定表格的宽度。
标签支持 HTML 中的全局属性。
标签支持 HTML 中的事件属性。
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To build a website with powerful functions and good user experience, HTML alone is not enough. The following technology is also required: JavaScript gives web page dynamic and interactiveness, and real-time changes are achieved by operating DOM. CSS is responsible for the style and layout of the web page to improve aesthetics and user experience. Modern frameworks and libraries such as React, Vue.js and Angular improve development efficiency and code organization structure.

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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.


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