TypeError: "x" has no properties
訊息
TypeError: null has no properties TypeError: undefined has no properties
錯誤類型
哪裡錯了?
null
(en-US) 與 undefined
(en-US) 並沒有可訪問的屬性。
示例
js
null.foo;
// TypeError: null has no properties
undefined.bar;
// TypeError: undefined has no properties