Javascript如何使对象允许任何键

Question

In Angular (typescript), say I initiate this variable:

myVar = {}

Then I do a call that assigns this variable to a bigger object:

... this.myVar = response

Then when I want to access something on this changed object, I keep getting errors that the keys don't exist. For example with this code this.myVar.Name would throw the error Property "Name" does not exist on type '{}' . How can I just bypass this error?

Something like myVar: any does the job, but I would still like to at least declare it as an object with something like = {} .

I'm looking for something like {any} or any{}

Answer 1

This is an issue for typescript types , and for that I would recommend adding a tag for typescript in your question. I think you can use the object type , it does exactly what you want, that is accept any kind of key. So the code would be: const yourVar: object = {};

Answer 2

以下应该工作

let myVar: any = {};

Answer 3

Just make it of type any .

myVar: any;

Or better , you can make an interface to represent the type of myVar , let's say that you have modal Product which has properties: name, price, description etc... and then myVar: Product

Answer 4

You could type it as an object with variable keys:

 let myVar: { [key: string]: any } = {};

that way you could add more fine-grained typings to the object.