firstGroup optionID: 3
Uncaught NotFoundError: Failed to

execute 'removeChild' on 'Node': The node to be removed

is not a child of this node.
I have looked for a piece of code, it maybe slove this problem.

Code:
function removeElement(_element){
     var _parentElement = _element.parentNode;
     if(_parentElement){
            _parentElement.removeChild(_element); 
     }
}