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15 lines
189 B
HTML
15 lines
189 B
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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</head>
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<body>
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First
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<script>
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"use strict";
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window.onbeforeunload = function(e) {
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e.returnValue = "?";
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};
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</script>
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</body>
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</html>
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