arguments Object

function 
   alert(arguments.length) 
} 

function MyFunction() 
   arguments[1], arguments[2]  // this is an array (similar to params in VBA 

function AddArgs() { 
   let sum = 0; 
// forEach will not work as arguments is technically not an array 
   for (let i=0; i<arguments.length; i++) { 
      sum += arguments[i]; 
   } 
   return sum; 
} 

console.log addArgs(4,5,6,7)   // 23