addAt(index, element) method . Why I can't pass the first question though It seems to be correct?

JavaScript
1 
this.addAt = function(index, element){
    if (index < 0 || index >= length) {
     return false;
   }
   let currentNode= head;
   if (index > 0) {
     let tracker= 0;
     while (tracker+1 !== index) {
       currentNode= currentNode.next;
       tracker++;
     }
   }

   const newNode = new Node(element);
   newNode.next = currentNode.next;
   /
   index === 0? head = newNode: currentNode.next = newNode
   length++;
 };
2

Please provide a link to the Step. Also, please put your question in the post body. Thanks

3

My logic seems right but I don’t really know why I can’t pass question one where it said if index is 0, reassign head to new node.
thanks

4

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