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7 lines
302 B
7 lines
302 B
window.addEventListener( "beforeunload", (event)=>{ |
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// Cancel the event as stated by the standard. |
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event.preventDefault(); |
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// Chrome requires returnValue to be set. |
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event.returnValue = 'This is invision, not the site. Are you sure?'; |
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return 'This is invision, not the site. Are you sure?'; |
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} );
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