'onBeforeUnload' Properties : onBeforeUnload « Event Handlers Reference « JavaScript Reference

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'onBeforeUnload' Properties

+----------------+--------------------------------------------------------------+
| Properties     |altKey                          altLeft                       |
|                |clientX                         clientY                       |
|                |ctrlKey                         ctrlLeft                      |
|                |returnValue                     shiftKey                      |
|                |shiftLeft                       type                          |
+----------------+--------------------------------------------------------------+








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1.'onBeforeUnload' Syntax and Note
2.'onBeforeUnload' Example
3.'onBeforeUnload' is applied to