Assignment GDB Solution: Javascript

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JavaScript isNaN() Function

JavaScript isNaN() Function The isNaN() function determines whether a value is an illegal number (Not-a-Number). This function returns true if the value is NaN, and false if not. Syntax isNaN(value) Example <script type=”text/javascript”> document.write(isNaN(123)+ “<br />”); document.write(isNaN(-1.23)+ “<br />”); document.write(isNaN(5-2)+ “<br />”); document.write(isNaN(0)+ “<br />”); document.write(isNaN(“Hello”)+ “<br />”); document.write(isNaN(“2005/12/12”)+ “<br />”); </script> Output false false false false […]