Recursive method to find elements by class name

getElementsByClassName

function getElementsByClassName(className) {
  var elements = document.body.children,
      elArr    = Array.prototype.slice.apply(elements),
      results  = [];

  function inspect(node, results) {
    if(node.getAttribute && node.getAttribute('class')) {
      if(node.getAttribute('class').split(" ").indexOf(className) >= 0) {
        results.push(node);
      }
    };
  };
  
  elArr.forEach(function(x) {
    inspect(x, results);
    for(var i = 0; i < x.childNodes.length; i++) {
      var node = x.childNodes[i];
      inspect(node, results);
    }
  });
  
  return results;
  
}
getElementsByClassName('central-featured-lang');

you should switch the order of the conditionals on line 7 with the one on line 11 otherwise the order is a little starts from the bottom up . unless you intended that.