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  • This WPT test may be referenced by the following Test IDs:
<!DOCTYPE html>
<meta charset="utf-8">
<title>HTML Test: focus - default value of tabindex</title>
<link rel="author" title="Intel" href="http://www.intel.com/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<button id="test1">TEST1</button>
<div id="test2">TEST2</div>
<script>
test(function() {
assert_equals(document.getElementById("test1").tabIndex, 0, "The value of tabIndex attribute should be 0.");
}, "The default value of tabIndex attribute must be 0 for elements that are focusable");
test(function() {
assert_equals(document.getElementById("test2").tabIndex, -1, "The value of tabIndex attribute should be -1.");
}, "The default value of tabIndex attribute must be -1 for elements that are not focusable");
</script>