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<!DOCTYPE html>
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<html lang="en">
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    <head>
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      <meta charset="UTF-8">
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      <title>Built-in functions</title>
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    </head>
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    <body>
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      <script>
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       let choice = confirm("Do you want to close the page?");
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       alert(choice);     
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      </script>
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    </body>
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</html>