1// Copyright 2022 The Chromium Authors 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5window.addEventListener('beforeunload', function(event) { 6 // Since leaving the page discards the accumulated logs, show a confirmation 7 // dialog when the user attempts to leave. 8 event.returnValue = ''; 9}); 10