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<!DOCTYPE html>
<meta charset="utf-8">
<title>Form's lexical scope is established only for form-associated elements</title>
<link rel="help" href="https://html.spec.whatwg.org/multipage/forms.html#form-associated-element">
<link rel="help" href="https://html.spec.whatwg.org/multipage/webappapis.html#getting-the-current-value-of-the-event-handler">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<form id="form">
<input onclick="window.inputOnClickElements = elements;">
<img onclick="window.imgOnClickElements = elements;" alt="img">
<div onclick="window.divOnClickElements = elements;">div</div>
<x-foo onclick="window.xFooOnClickElements = elements;">x-foo</x-foo>
</form>
<script>
"use strict";
window.elements = "global_elements";
test(() => {
const input = form.querySelector("input");
input.click();
assert_equals(window.inputOnClickElements, form.elements);
}, "<input> has a form owner");
test(() => {
const img = form.querySelector("img");
img.click();
assert_equals(window.imgOnClickElements, form.elements);
}, "<img> has a form owner");
test(() => {
const div = form.querySelector("div");
div.click();
assert_equals(window.divOnClickElements, window.elements);
}, "<div> doesn't have a form owner");
test(() => {
customElements.define("x-foo", class extends HTMLElement {
static formAssociated = true;
});
const xFoo = form.querySelector("x-foo");
xFoo.click();
assert_equals(window.xFooOnClickElements, form.elements);
}, "form-associated <x-foo> has a form owner");
</script>
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