Rocket Validator integrates the W3C Validator HTML checker into an automated web crawler.
HTML issues tagged as tab.
Elements with the role
tab must either be a child of an element with the
tablist role, or have their
id part of the
aria-owns property of a
An element with the tab role controls the visibility of an associated element with the tabpanel role. The common user experience pattern is a group of visual tabs above, or to the side of, a content area, and selecting a different tab changes the content and makes the selected tab more prominent than the other tabs.
<div class="tabs"> <div role="tablist" aria-label="Sample Tabs"> <button role="tab" aria-selected="true" aria-controls="panel-1" id="tab-1" tabindex="0"> First Tab </button> <button role="tab" aria-selected="false" aria-controls="panel-2" id="tab-2" tabindex="-1"> Second Tab </button> </div> <div id="panel-1" role="tabpanel" tabindex="0" aria-labelledby="tab-1"> <p>Content for the first panel</p> </div> <div id="panel-2" role="tabpanel" tabindex="0" aria-labelledby="tab-2" hidden> <p>Content for the second panel</p> </div> </div>
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A tab character has been found in the domain part for an
href attribute, which is not allowed.
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