Stop window.location execution in global context

Question

I want to stop execution of window.location as in below when a page loads:

<script type="text/javascript">
alert('Bid closed ');
window.location = '/index.html';
</script>

I'm able to bypass alert message by replacing alert function during document_start in the manifest.json. But unable to stop window.location from executing.

Answer 1

window object is not writable, so you cannot change document and window objects check this link for more info