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<!DOCTYPE HTML>
<title>Radio input cancel behavior reverts state</title>
<link rel="author" title="jeffcarp" href="mailto:gcarpenterv@gmail.com">
<link rel="help" href="https://html.spec.whatwg.org/#radio-button-state-(type=radio)">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
"use strict";
test(() => {
const input = document.createElement("input");
input.type = "radio";
document.body.appendChild(input);
const events = [];
input.addEventListener("change", () => {
events.push("change");
});
input.addEventListener("click", e => {
// cancel click event
e.preventDefault();
events.push("click");
});
input.addEventListener("input", () => {
events.push("input");
});
assert_false(input.checked);
input.click();
assert_false(input.checked);
// only click event called
assert_array_equals(events, ["click"]);
}, "radio input cancel behavior reverts state");
test(() => {
const form = document.createElement("form");
form.innerHTML = `
<input id="radio1" type="radio" name="radiogroup" checked>
<input id="radio2" type="radio" name="radiogroup">
`;
document.body.appendChild(form);
const inputs = form.querySelectorAll("input[type=radio]");
const events = [];
inputs.forEach(input => {
input.addEventListener("change", () => {
events.push(`${input.id} change`);
});
input.addEventListener("click", e => {
// cancel click event
e.preventDefault();
events.push(`${input.id} click`);
});
input.addEventListener("input", () => {
events.push(`${input.id} input`);
});
});
assert_true(inputs[0].checked);
assert_false(inputs[1].checked);
inputs[1].click();
assert_true(inputs[0].checked);
assert_false(inputs[1].checked);
// only click event called
assert_array_equals(events, ["radio2 click"]);
}, "radio input cancel behavior reverts previous selected radio input state");
</script>
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