getElementsByClassName recursion

Question

I have been trying to implement a getElementsByClassName function that behaves exactly like the DOM method. Through much research I have come up with the following but it seems that what is returned does not match what the standard method will return. The last console.log statement appears to print what I am looking for but somehow what is returned differs. Any suggestions or help would be greatly appreciated!

var getElementsByClassName = function(className){
  var results= [];
  var bod = document.body;
    var iterateBod = function(bod){

    if(bod.classList && bod.classList.contains(className)){
        results.push(bod); 
        console.log(results)
    }else{
        for(var i = 0; i < bod.childNodes.length; i++){
            iterateBod(bod.childNodes[i]);
        }
    }
    };

iterateBod(bod);
console.log(results);
return results;
};

Answer 1

change the condition inside recursion

var getElementsByClassName = function(className){
var results= [];
var bod = document.body;
  var iterateBod = function(bod){
    if(bod.classList && bod.classList.contains(className))
     {
     results.push(bod); 
     console.log(results);
     if(bod.childNodes)
     {
         for(var i = 0; i < bod.childNodes.length; i++)
         {
             iterateBod(bod.childNodes[i]);
         }
     }
   }
 };

iterateBod(bod);
console.log(results);
return results;
};