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Chapter 4: API and DOM
C H A P T E R 4
API and DOM
In this chapter, we’ll consider how screen readers work in more detail and take a look at the DOM and accessibility APIs that are used by assistive technology (AT) to access web content. This is important to understand. Although some of this stuff might seem a little abstract or academic and this chapter is not vital for you to build accessible HTML5 content, it will help. By design, it’s also short.
Note As previously mentioned, although screen readers are not the only technology people with disabilities use to access the Web, they are arguably the most complex. Also, the technical accessibility support requirements found under the hood are probably the most extensive.
Don’t worry too much if this chapter seems a little tricky; it’s not an easy subject. I’ve worked with people with disabilities for nearly 10 years, and I’ve had experience with a broad range of assistive technologies when I worked as an AT specialist. I was fortunate enough to gain a lot of experience in the diverse kinds of AT that exist, as well as the myriad applications for these technologies.
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