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<!DOCTYPE html>
<meta charset="utf-8">
<title>Checkbox click events</title>
<link rel="author" title="jeffcarp" href="mailto:gcarpenterv@gmail.com">
<link rel=help href="https://html.spec.whatwg.org/#checkbox-state-(type=checkbox)">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
"use strict";
test(() => {
const input = document.createElement("input");
input.type = "checkbox";
const values = [];
input.addEventListener("click", e => {
values.push(input.checked);
e.preventDefault();
values.push(input.checked);
});
input.click();
values.push(input.checked);
assert_array_equals(values, [true, true, false]);
}, "clicking and preventDefaulting a checkbox causes the checkbox to be checked during the click handler but reverted");
test(() => {
const input = document.createElement("input");
input.type = "checkbox";
document.body.appendChild(input);
const events = [];
input.addEventListener("change", () => {
events.push("change");
});
input.addEventListener("click", () => {
events.push("click");
});
input.addEventListener("input", () => {
events.push("input");
});
assert_false(input.checked);
input.click();
assert_true(input.checked);
assert_array_equals(events, ["click", "input", "change"]);
}, "a checkbox input emits click, input, change events in order after synthetic click");
test(() => {
const input = document.createElement("input");
input.type = "checkbox";
document.body.appendChild(input);
const events = [];
input.addEventListener("change", () => {
events.push("change");
});
input.addEventListener("click", () => {
events.push("click");
});
input.addEventListener("input", () => {
events.push("input");
});
assert_false(input.checked);
const event = new MouseEvent("click", { bubbles: true, cancelable: true });
input.dispatchEvent(event);
assert_true(input.checked);
assert_array_equals(events, ["click", "input", "change"]);
}, "a checkbox input emits click, input, change events in order after dispatching click event");
test(() => {
const input = document.createElement("input");
input.type = "checkbox";
document.body.appendChild(input);
const events = [];
input.addEventListener("change", () => {
events.push("change");
});
input.addEventListener("click", e => {
e.preventDefault();
events.push("click");
});
input.addEventListener("input", () => {
events.push("input");
});
assert_false(input.checked);
input.click();
assert_false(input.checked);
assert_array_equals(events, ["click"]);
}, "checkbox input respects cancel behavior on synthetic clicks");
</script>
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