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<!DOCTYPE html> <html> <body> <h2>JavaScript Numbers</h2> <p>If you use NaN in a mathematical operation, the result can be a concatenation:</p> <p id="demo"></p> <script> let x = NaN; let y = "5"; document.getElementById("demo").innerHTML = x + y; </script> </body> <!-- /js/tryit.asp?filename=tryjs_numbers_nan_concat Thu, 06 Feb 2025 18:15:25 GMT --> </html>
