let notes = localStorage.getItem('notes');
     if (notes == null) {
          notesObj=[] ;
     }
     else{
          notesObj = JSON.parse(notes) ; 
     }
     notesObj.push(addTxt.value);

I have confusion in the line inside the if and else condition when we say "enter code herenotesobj = [] " what does that mean, does it mean that notesobj is asigned a empty string or something because generally in c++ when we do the same then value will go into notesobj. If it is so then why we need to push the value of txtvalue. I might be not able to explain but if anyone will try to help then I would be able to explain further.