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HTML : javascript beforeunload detect refresh versus close
JavaScript #19: события при загрузке - DOMContentLoaded, load, unload, beforeunload, readyState
JavaScript : Capturing window.onbeforeunload
JavaScript Tutorial For Beginners #41 - Window onLoad Event
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How to Create a Custom Alert on Window Close with OK and Cancel Options using JavaScript
JavaScript Visualized - Event Loop, Web APIs, (Micro)task Queue
Stub the BeforeUnloadEvent.prototype.preventDefault Method
Beforeunload event listener is a life saver
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Last Updated: August 22, 2026
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