function isEven(n) { return n % 2 == 0; } function isOdd(n) { return Math.abs(n % 2) == 1; }
if ( num % 2 == 0) { alert('Even Number'); }else{ alert('Odd Number'); }
<!DOCTYPE html> <html> <body> <script> var num = 5; document.write("Number = "+num+"<br>"); if(num % 2 == 0) { document.write('Number is even!'); } else { document.write('Number is odd!'); } </script> </body> </html>
let isEven = (n) => !(n&1);