javascript - 嵌套的任意对象在 javascript 中不起作用

Question

为什么这不起作用？我收到一条错误消息，指出我的 IE9 不支持此操作。

var data = new { selectedUnitKey: { value1: 1, value2: 2} }

Answer 1

删除新的:

var data = { selectedUnitKey: { value1: 1, value2: 2} }

来自 the MDN :

The new operator creates an instance of a user-defined object type or of one of the built-in object types that has a constructor function.

当你定义你的“类”时，你可以像这样使用 new :

function SomeClass(unitKey) {
     this.selectedUnitKey = unitKey;
}
var data = new SomeClass({ value1: 1, value2: 2});