typescript 如何在打字稿中定义对象类型的对象
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How to define Object of Objects type in typescript
提问by marius
I have an object to store cached data which should look like this:
我有一个对象来存储缓存数据，它应该是这样的：
private data = {
'some_thing': new DataModel(),
'another_name': new DataModel()
}
I'm trying to assign an empty object to it in the constructor:
我试图在构造函数中为其分配一个空对象：
this.data = {}; // produces build error
Basically, i need to define the type of "data" field to say that it's going to have keys with random names and values of type DataModel. I've tried to do this:
基本上，我需要定义“数据”字段的类型，以说明它将具有具有随机名称和 DataModel 类型值的键。我试过这样做：
private data: Object<DataModel>
But this is invalid. How would i specify a correct type?
但这是无效的。我将如何指定正确的类型？
回答by Nitzan Tomer
It should be:
它应该是：
private data: { [name: string]: DataModel };
And then this should work:
然后这应该有效：
this.data = {};
