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<!DOCTYPE html> <html> <body> <h2>JavaScript Numbers</h2> <p>You can use the global JavaScript function isNaN() to find out if a value is not a number:</p> <p id="demo"></p> <script> let x = 100 / "Apple"; document.getElementById("demo").innerHTML = isNaN(x); </script> </body> <!-- /js/tryit.asp?filename=tryjs_numbers_isnan_true Thu, 06 Feb 2025 18:15:25 GMT --> </html>
