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<!DOCTYPE html>
<html><head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
<style type="text/css">
.tabs {
padding: 1em;
}
[role="tablist"] {
margin-bottom: -1px;
}
[role="tab"] {
position: relative;
z-index: 1;
background: white;
border-radius: 5px 5px 0 0;
border: 1px solid grey;
border-bottom: 0;
padding: 0.2em;
}
[role="tab"][aria-selected="true"] {
z-index: 3;
}
[role="tabpanel"] {
position: relative;
padding: 0 0.5em 0.5em 0.7em;
border: 1px solid grey;
border-radius: 0 0 5px 5px;
background: white;
z-index: 2;
}
[role="tabpanel"]:focus {
border-color: orange;
outline: 1px solid orange;
}
</style>
<script>
'use strict';
/* exported changeTabs */
function changeTabs(target) {
const parent = target.parentNode;
const grandparent = parent.parentNode;
// Remove all current selected tabs
parent
.querySelectorAll('[aria-selected="true"]')
.forEach(t => t.setAttribute("aria-selected", false));
// Set this tab as selected
target.setAttribute("aria-selected", true);
// Hide all tab panels
grandparent
.querySelectorAll('[role="tabpanel"]')
.forEach(p => (p.hidden = true));
// Show the selected panel
grandparent.parentNode
.querySelector(`#${target.getAttribute("aria-controls")}`)
.removeAttribute("hidden");
}
</script>
<title>ARIA: tab role - Example - code sample</title>
</head>
<body id="body">
<div class="tabs">
<div id="tablist" role="tablist" aria-label="Sample Tabs">
<button onclick="changeTabs(this)" role="tab" aria-selected="true" aria-controls="panel-1" id="tab-1">
First Tab
</button>
<button onclick="changeTabs(this)" role="tab" aria-selected="false" aria-controls="panel-2" id="tab-2">
Second Tab
</button>
<button onclick="changeTabs(this)" role="tab" aria-selected="false" aria-controls="panel-3" id="tab-3">
Third 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 id="panel-3" role="tabpanel" tabindex="0" aria-labelledby="tab-3" hidden="">
<p>Content for the third panel</p>
</div>
</div>
</body></html>
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