How to append to HTML5 localStorage?

Question

I do a

localStorage.setItem(\'oldData\', $i(\"textbox\").value);

to set the value of key oldData to the value in a textbox.

Answer 1

I found this here :

interface Storage {
  readonly attribute unsigned long length;
  DOMString? key(unsigned long index);
  getter DOMString getItem(DOMString key);
  setter creator void setItem(DOMString key, DOMString value);
  deleter void removeItem(DOMString key);
  void clear();
};

Seems like it only has getItem,setItem,removeItem,clear,key and length.