{{jsSidebar("Errors")}}
Message
TypeError: null has no properties TypeError: undefined has no properties
Error type
{{jsxref("TypeError")}}.
What went wrong?
Both, {{jsxref("null")}} and {{jsxref("undefined")}}, have no properties you could access.
Examples
null.foo; // TypeError: null has no properties undefined.bar; TypeError: undefined has no properties
See also
- {{jsxref("null")}}
- {{jsxref("undefined")}}