JavaScript-from-Beginner-to-Professional/chapter 6/ex6

let start = 10; 
  
function loop1(val) { 
  console.log(val); 
  if (val < 1) { 
    return 
  } 
  return loop1(val - 1); 
} 
loop1(start); 
function loop2(val) { 
  console.log(val); 
  if (val > 0) { 
    val--; 
    loop2(val); 
  } 
  return 'end'; 
} 
loop2(start);