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<!DOCTYPE html>
<meta charset="utf-8">
<title>form action="" attribute effect on submission</title>
<link rel="author" title="Domenic Denicola" href="mailto:d@domenic.me">
<link rel="help" href="https://html.spec.whatwg.org/multipage/forms.html#dom-fs-action">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
"use strict";
// promise_test instead of async_test because all tests use window.success, and so can't run at the same time.
promise_test(t => {
return new Promise(resolve => {
window.success = t.step_func(locationLoaded => {
const expected = (new URL("resources/target/form-action-url-target.html?name=value", location.href)).href;
assert_equals(locationLoaded, expected);
resolve();
});
const iframe = document.createElement("iframe");
iframe.src = "resources/form-with-action.sub.html?action=target/form-action-url-target.html";
document.body.appendChild(iframe);
});
}, "An action URL should be resolved relative to the document's base URL (= document's URL in this case)");
promise_test(t => {
return new Promise(resolve => {
window.success = t.step_func(locationLoaded => {
const expected = (new URL("resources/form-with-action.sub.html?name=value", location.href)).href;
assert_equals(locationLoaded, expected);
resolve();
});
const iframe = document.createElement("iframe");
iframe.src = "resources/form-with-action.sub.html?action=";
document.body.appendChild(iframe);
});
}, "An empty-string action should submit the form to the document's URL (= document's base URL in this case)");
promise_test(t => {
return new Promise(resolve => {
window.success = t.step_func(locationLoaded => {
const expected = (new URL("resources/form-no-action.html?name=value", location.href)).href;
assert_equals(locationLoaded, expected);
resolve();
});
const iframe = document.createElement("iframe");
iframe.src = "resources/form-no-action.html";
document.body.appendChild(iframe);
});
}, "A missing action should submit the form to the document's URL (= document's base URL in this case)");
</script>
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