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<!DOCTYPE HTML>
<head>
<title>input type checkbox</title>
<link rel="author" title="Gary Gao" href="mailto:angrytoast@gmail.com">
<link rel="help" href="https://html.spec.whatwg.org/multipage/#checkbox-state-(type=checkbox)">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<div style="display:none;">
<input id="checkbox_default" type="checkbox" width="20" />
<input id="checkbox_checked" type="checkbox" checked />
<input id="checkbox_indeterminate" type="checkbox" />
<input id="checkbox_default_value" type="checkbox" />
</div>
<div id="log"></div>
<script>
var checkbox_default = document.getElementById('checkbox_default'),
checkbox_checked = document.getElementById('checkbox_checked'),
checkbox_indeterminate = document.getElementById('checkbox_indeterminate'),
checkbox_default_value = document.getElementById('checkbox_default_value');
test(function() {
assert_false(checkbox_default.checked);
}, "default checkbox has no checkedness state");
test(function() {
assert_true(checkbox_checked.checked);
}, "checkbox with initial state set to checked has checkedness state");
test(function() {
checkbox_default.checked = 'chicken'
assert_true(checkbox_default.checked);
}, "changing the checked attribute to a string sets the checkedness state");
test(function() {
assert_false(checkbox_indeterminate.indeterminate);
}, "a checkbox has an indeterminate state set to false onload");
test(function() {
checkbox_indeterminate.indeterminate = true,
assert_true(checkbox_indeterminate.indeterminate);
}, "on setting, a checkbox's indeterminate state must be set to the new value and returns the last value it was set to");
test(function() {
assert_equals(checkbox_default_value.value, 'on');
}, "default/on: on getting, if the element has a value attribute, it must return that attribute's value; otherwise, it must return the string 'on'");
test(function() {
checkbox_default_value.value = 'chicken'
assert_equals(checkbox_default_value.value, 'chicken');
}, "on getting, if the element has a value attribute, it must return that attribute's value");
</script>
</body>
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