Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.

At W3Schools you will find complete references about HTML elements, attributes, events, color names, entities, character-sets, URL encoding, language codes, HTTP messages, browser support, and more:

在 W3School，你可以找到你所需要的所有的网站建设教程。 从基础的 HTML 到 CSS，乃至进阶的 XML、SQL、JS、PHP 和 Java。 从左侧的菜单选择你需要的教程！ 我们的参考手册涵盖了网站技术的方方面面。 其中包括W3C标准技术：HTML、CSS、XML 。 以及其他技术，诸如 JS、SQL、Java 等。 在 W3School，我们提供上千个实例。 通过使用我们的在线编辑器，你可以编辑这些例子，并对代码进行实验。 一寸光阴一寸金，因此，我们为您提供快捷易懂的学习内容 …

Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML.

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Learn directly from W3C and master the foundational programming languages for Web development -- HTML5, CSS and JavaScript -- with the W3C "Front-End Web Developer" (FEWD) Professional Certificate program which consists in 5 courses. Gain skills in one of the fastest growing careers!

JavaScript is easy to learn. This tutorial will teach you JavaScript from basic to advanced. With our "Try it Yourself" editor, you can edit the source code and view the result. We recommend reading this tutorial, in the sequence listed in the menu. If you have a large screen, the menu will always be present on the left.

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