Write a JavaScript program to check whether three given numbers are increasing in strict mode or in soft mode

function number_order(x, y, z ) {
  if ( y > x && z > y) 
  {
    return "strict mode";    
  }
  else if(z > y) 
   return "Soft mode";
  else
    return "Undefinded";
}

console.log(number_order(10,15,31));
console.log(number_order(24,22,31));
console.log(number_order(50,21,15));