required-optional.html (1961B)
1 <!DOCTYPE html> 2 <meta charset=utf-8> 3 <title>Selector: pseudo-classes (:required, :optional)</title> 4 <link rel="author" title="Denis Ah-Kang" href="mailto:denis@w3.org" id=link1> 5 <link rel=help href="https://html.spec.whatwg.org/multipage/#pseudo-classes" id=link2> 6 <script src="/resources/testharness.js"></script> 7 <script src="/resources/testharnessreport.js"></script> 8 <script src="utils.js"></script> 9 <div id="log"></div> 10 <input type=text id=text1 value="foobar" required> 11 <input type=text id=text2 required> 12 <input type=text id=text3> 13 <select id=select1 required> 14 <optgroup label="options" id=optgroup1> 15 <option value="option1" id=option1>option1 16 </select> 17 <select id=select2> 18 <optgroup label="options" id=optgroup2> 19 <option value="option2" id=option2>option2 20 </select> 21 <textarea required id=textarea1>textarea1</textarea> 22 <textarea id=textarea2>textarea2</textarea> 23 24 <script> 25 testSelectorIdsMatch(":required", ["text1", "text2", "select1", "textarea1"], "':required' matches required <input>s, <select>s and <textarea>s"); 26 testSelectorIdsMatch(":optional", ["text3", "select2", "textarea2"], "':optional' matches elements <input>s, <select>s and <textarea>s that are not required"); 27 28 document.getElementById("text1").removeAttribute("required"); 29 testSelectorIdsMatch(":required", ["text2", "select1", "textarea1"], "':required' doesn't match elements whose required attribute has been removed"); 30 testSelectorIdsMatch(":optional", ["text1", "text3", "select2", "textarea2"], "':optional' matches elements whose required attribute has been removed"); 31 32 document.getElementById("select2").setAttribute("required", "required"); 33 testSelectorIdsMatch(":required", ["text2", "select1", "select2", "textarea1"], "':required' matches elements whose required attribute has been added"); 34 testSelectorIdsMatch(":optional", ["text1", "text3", "textarea2"], "':optional' doesn't match elements whose required attribute has been added"); 35 </script>