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易用性

如果你想成为一个web开发者,学习一些HTML,CSS和JavaScript是很有用的, 但是仅仅使用这些技术是不够的, 你应该更进一步拓展你的知识 — 你需要响应式地使用它们来最大程度地发展你的用户, 并且使用这些技术时不能把任何一门排斥出去。 为了达到这个目的, 要遵循一般最佳实践(这些最佳实践已经被 HTML, CSS, 和 JavaScript 相关的话题所证明),进行跨浏览器测试, 并且从项目最初阶段就把易使用性考虑在内。在这个模块中我们将会详细讨论后者。

学习要求:

为了达到最好的学习效果,先 HTML, CSS, 和 JavaScript  话题的前两个模块的学习是最低要求, 或者有可能的话, 在你学习相关联的技术话题时也把易用性相关的内容学习了, 这样会更好。

注意: If you are working on a computer/tablet/other device where you don't have the ability to create your own files, you can try out most of the code examples in an online coding program such as JSBin or Thimble.

引导

What is accessibility?
This article starts the module off with a good look at what accessibility actually is — this includes what groups of people we need to consider and why, what tools different people use to interact with the web, and how we can make accessibility part of our web development workflow.
HTML: A good basis for accessibility
A great deal of web content can be made accessible just by making sure the correct HTML elements are used for the correct purpose at all times. This article looks in detail at how HTML can be used to ensure maximum accessibility.
CSS and JavaScript accessibility best practices
CSS and JavaScript, when used properly, also have the potential to allow for accessible web experiences, but if misused they can significantly harm accessibility. This article outlines some CSS and JavaScript best practices that should be considered to ensure that even complex content is as accessible as possible.
WAI-ARIA basics
Following on from the previous article, sometimes making complex UI controls that involve unsemantic HTML and dynamic JavaScript-updated content can be difficult. WAI-ARIA is a technology that can help with such problems by adding in further semantics that browsers and assistive technologies can recognize and use to let users know what is going on. Here we'll show how to use it at a basic level to improve accessiblity.
Accessible multimedia
Another category of content that can create accessibility problems is multimedia — video, audio, and image content need to be given proper textual alternatives so they can be understood by assistive technologies and their users. This article shows how.
Mobile accessibility
With web access on mobile devices being so popular, and popular platforms such as iOS and Android having fully-fledged accessibility tools, it is important to consider the accessibility of your web content on these plartforms. This article looks at mobile-specific accessibility considerations.

Assessments

Accessibility troubleshooting
In the assessment for this module, we present to you a simple site with a number of accessibility issues that you need to diagnose and fix.

See also

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