HTML Editor
<!DOCTYPE html> <html lang="en-US"> <body> <script> document.write(Number.isNaN(NaN)+" :NaN <br>"); document.write(Number.isNaN(0 / 0)+" :0 / 0 <br><br>"); document.write(Number.isNaN(25)+" :25 <br>"); document.write(Number.isNaN(-25.5)+" :-25.5 <br>"); document.write(Number.isNaN(true)+" :true <br>"); document.write(Number.isNaN(false)+" :false <br>"); document.write(Number.isNaN('65')+" :'65' <br>"); document.write(Number.isNaN([5])+" :[5] <br>"); document.write(Number.isNaN(Infinity)+" :Infinity <br>"); document.write(Number.isNaN(-Infinity)+" :-Infinity <br>"); document.write(Number.isNaN(null)+" :null <br>"); </script> </body> </html>
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