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- This WPT test may be referenced by the following Test IDs:
- /html/semantics/selectors/pseudo-classes/required-optional.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset=utf-8>
<title>Selector: pseudo-classes (:required, :optional)</title>
<link rel="author" title="Denis Ah-Kang" href="mailto:denis@w3.org" id=link1>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="utils.js"></script>
<div id="log"></div>
<input type=text id=text1 value="foobar" required>
<input type=text id=text2 required>
<input type=text id=text3>
<select id=select1 required>
<optgroup label="options" id=optgroup1>
<option value="option1" id=option1>option1
</select>
<select id=select2>
<optgroup label="options" id=optgroup2>
<option value="option2" id=option2>option2
</select>
<textarea required id=textarea1>textarea1</textarea>
<textarea id=textarea2>textarea2</textarea>
<script>
testSelectorIdsMatch(":required", ["text1", "text2", "select1", "textarea1"], "':required' matches required <input>s, <select>s and <textarea>s");
testSelectorIdsMatch(":optional", ["text3", "select2", "textarea2"], "':optional' matches elements <input>s, <select>s and <textarea>s that are not required");
document.getElementById("text1").removeAttribute("required");
testSelectorIdsMatch(":required", ["text2", "select1", "textarea1"], "':required' doesn't match elements whose required attribute has been removed");
testSelectorIdsMatch(":optional", ["text1", "text3", "select2", "textarea2"], "':optional' matches elements whose required attribute has been removed");
document.getElementById("select2").setAttribute("required", "required");
testSelectorIdsMatch(":required", ["text2", "select1", "select2", "textarea1"], "':required' matches elements whose required attribute has been added");
testSelectorIdsMatch(":optional", ["text1", "text3", "textarea2"], "':optional' doesn't match elements whose required attribute has been added");
</script>