Open
Bug 1844066
Opened 2 years ago
Updated 2 years ago
Changing the src attribute of an IFRAME element that is added to the DOM creates a new history entry.
Categories
(Core :: DOM: Navigation, defect)
Tracking
()
NEW
People
(Reporter: daniel, Unassigned)
Details
Attachments
(1 file)
|
13.00 KB,
image/png
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Details |
Jake diagram describing desired and actual results.
Steps to reproduce:
From javascript changing the src attribute.
document.querySelector('iframe').src = 'https://mozilla.org';
Actual results:
history.length = 3;
Expected results:
history.length = 2;
Minimal example:
<!DOCTYPE html>
<head>
<title>BUG-1844066 test page</title>
</head>
<body>
<div>
<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1844066">BUG-1844066</a>
</div>
<iframe></iframe>
<button>add frame</button>
<script>
const historyLength = history.length;
document.querySelector('button').addEventListener('click', () => {
const iframe = document.querySelector('iframe');
iframe.onload = () => {
console.assert(historyLength === history.length, 'history length changed!');
}
iframe.src = "https://mozilla.org";
})
</script>
</body>
Assert fails on iframe load (never mind the X-Frame-Options: DENY not showing the actual mozilla.org content).
Since this behaviour is
- different on other browsers
- has a (silly) workaround
i think this should be filed as bug.
Workaround is to remove the iframe from the DOM before changing the source, and re-appending it after:
const historyLength = history.length;
document.querySelector('button').addEventListener('click', () => {
const iframe = document.querySelector('iframe');
iframe.onload = () => {
console.assert(historyLength === history.length, 'history length changed!');
}
const span = document.createElement('span');
iframe.replaceWith(span);
iframe.src = "https://mozilla.org";
span.replaceWith(iframe);
})
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Comment 2•2 years ago
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The Bugbug bot thinks this bug should belong to the 'Core::DOM: Core & HTML' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.
Component: Untriaged → DOM: Core & HTML
Product: Firefox → Core
Jake diagram showing how the navigation and session history entries are currently generated versus "expected" behaviour.
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Updated•2 years ago
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Severity: -- → S3
Status: UNCONFIRMED → NEW
Component: DOM: Core & HTML → DOM: Navigation
Ever confirmed: true
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Description
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