屬性的刪除
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015 .
你可以使用
delete
運算子移除屬性。下面的代碼示範如何移除屬性︰
js
// 建立新的物件 myobj，以及兩個屬性 a 和 b。
myobj = new Object();
myobj.a = 5;
myobj.b = 12;
// 移除一個屬性，只剩 b 屬性留在 myobj 裡。
delete myobj.a;