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+<!DOCTYPE html>
+<html>
+ <head>
+ <title>Hidden input element</title>
+ <link rel="author" title="Kinuko Yasuda" href="mailto:kinuko@chromium.org">
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#hidden-state-(type=hidden)">
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+ </head>
+
+ <body>
+ <h1>Hidden input element</h1>
+ <div style="display: none">
+
+ <input id="hidden" type="hidden" />
+ <input id="hidden_with_value" type="hidden" value="foo" />
+
+ </div>
+ <div id="log"></div>
+ <script type="text/javascript">
+
+ test(
+ function() {
+ assert_equals(document.getElementById("hidden").value, "");
+ assert_equals(document.getElementById("hidden_with_value").value, "foo");
+ }, "Value returns the current value for hidden");
+
+ test(
+ function() {
+ document.getElementById("hidden").value = "A";
+ assert_equals(document.getElementById("hidden").value, "A");
+ document.getElementById("hidden").value = "B";
+ assert_equals(document.getElementById("hidden").value, "B");
+ }, "Setting value changes the current value for hidden");
+
+ test(
+ function() {
+ assert_equals(document.getElementById("hidden").files, null);
+ }, "files attribute must return null for hidden");
+
+ test(
+ function() {
+ assert_equals(document.getElementById("hidden").valueAsDate, null);
+ }, "valueAsDate attribute must return null for hidden");
+
+ test(
+ function() {
+ assert_equals(document.getElementById("hidden").valueAsNumber, NaN);
+ }, "valueAsNumber attribute must return NaN for hidden");
+
+ test(
+ function() {
+ assert_equals(document.getElementById("hidden").list, null);
+ }, "list attribute must return null for hidden");
+
+ test(
+ function() {
+ var el = document.getElementById("hidden");
+ assert_throws_dom("InvalidStateError", function() { el.stepDown(); }, "");
+ }, "stepDown does not apply for hidden");
+
+ test(
+ function() {
+ var el = document.getElementById("hidden");
+ assert_throws_dom("InvalidStateError", function() { el.stepUp(); }, "");
+ }, "stepUp does not apply for hidden");
+
+ test(function(){
+ var el = document.getElementById("hidden");
+ assert_false(el.willValidate);
+ }, "input type=hidden is barred from constraint validation");
+ </script>
+ </body>
+</html>