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Test Info:

<!DOCTYPE html>
<meta charset="utf-8">
<link rel="author" title="Joey Arhar" href="mailto:jarhar@chromium.org">
<!-- The expected behavior of this test is not explicitly specified. -->
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
async_test(t => {
window.onload = t.step_func(() => {
const iframe = document.createElement('iframe');
iframe.name = 'myframe';
iframe.onload = t.step_func_done(() => {
assert_equals(iframe.contentDocument.location.pathname, '/formaction.html');
});
const form = document.createElement('form');
form.target = iframe.name;
form.action = '/formaction.html';
document.body.appendChild(form);
iframe.src = 'javascript:false';
document.body.appendChild(iframe);
form.submit();
});
}, 'Verifies that form submissions cancel javascript navigations to prevent duplicate load events.');
</script>