Functions and Recursion in JS code example

Example: javascript recursion over array

function recurse(arr=[])
{
  	// base case, to break the recursion when the array is empty
    if (arr.length === 0) {
    	return;
    }
  	
  	// destructure the array
	const [x, ...y] = arr;
  
  	// Do something to x
  	
  	return recurse(y);
}