Technique H69:Providing heading elements at the beginning of each section of content
Applicability
HTML
This technique relates to:
2.4.1: Bypass Blocks (Sufficient when used with Grouping blocks of repeated material in a way that can
be skipped, using one of the
following techniques:
)
The objective of this technique is to use section headings to convey the structure
of the content. Heading markup can be used:
to indicate start of main content;
to mark up section headings within the main content area;
to demarcate different navigational sections like top or main navigation, left or
secondary navigation and footer navigation;
to mark up images of text that are used as headings;
to allow users the ability to navigate a page by sections or skip repeated blocks
of information.
Headings are designed to convey logical hierarchy. Skipping levels in the sequence
of headings may create the impression that the structure of the document has not been
properly thought through or that specific headings have been chosen for their visual
rendering rather than their meaning. Authors are encouraged to nest headings hierarchically.
When headings are nested hierarchically, the most important information is given the
highest logical level, and subsections are given subsequent logical levels.(i.e.,
h2 is a subsection of h1). Providing this type of structure will help users understand the overall organization
of the content more easily.
Since headings indicate the start of important sections of content, it is possible
for users with assistive technology to jump directly to the appropriate heading and
begin reading the content. This significantly speeds interaction for users who would
otherwise access the content slowly. Headings create chunks of information that can
be found easily by people with disabilities, such as a blind person using a screen
reader, or a person with a cognitive disability who uses assistive technology that
delineates groups of information, or someone with a communication disability or illiteracy,
who uses a screen reader to assist them in their reading.
All of our techniques assume that people needing special user agents (including assistive
technology or special plug-ins) will get and be using that type of user agent (for
example: a screen reader, or plug-in that allows keyboard navigation of properly marked
up content, etc.).
Examples
Example 1: Organizing the sections of a search page
This example marks up each section heading using h2 elements.
<h1>Search Technical Periodicals</h1>
<h2>Search</h2>
<form action="/search" role="search">
<label for="searchInput">Enter search topic:</label>
<input id="searchInput" type="text">
<input type="submit" value="Search">
</form>
<section>
<h2>Available Periodicals</h2>
<ul>
<li><a href="https://example.com/pcoder">Professional Coder</a></li>
<li><a href="https://example.com/algo">Algorithms</a></li>
<li><a href="https://example.com/jse">Journal of Software Engineering</a></li>
</ul>
</section>
<section>
<h2>Search Results</h2>
... search results are returned in this section ...
</section>
Example 2: Headings show the overall organization of the content
In this example, heading markup is used to make the navigation and main content sections
perceivable.
<main>
<h1>Why Monday Monkey Lives For The Weekend</h1>
... text, images, and other material making up the main content ...
</main>
<nav aria-labelledby="nav-heading">
<h2 id="nav-heading">More About Monday Monkey, Ltd.</h2>
<ul>
<li><a href="/about">About us</a></li>
<li><a href="/contact">Contact us</a></li>
...
</ul>
</nav>
Example 3: Headings show the organization of material within the main content
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Cooking techniques</title>
</head>
<body>
<main>
<h1>Cooking techniques</h1>
<p>... some text here ...</p>
<h2>Cooking with oil</h2>
<p>... text of the section ...</p>
<h2>Cooking with butter</h2>
<p>... text of the section ...</p>
</main>
</body>
</html>