How to create a singleton service in Aurelia?

问题

I'm pretty new to Aurelia (only been using it a few days) and I love it!

I know how to make a service with Aurelia, but how can I make that service a singleton that I can then share data with between multiple ViewModels?

Thanks

回答1:

Just inject it

By default, the DI container assumes that everything is a singleton instance; one instance for the app. However, you can use a registration decorator to change this.

回答2:

So I realized I was thinking about this too hard. I was trying to depend on the framework (Aurelia) to do all the work, but actually it was a simple ES6 class change that makes it an instance.

let instance = null;

export class SingletonService {

	constructor() {
		if(!instance) {
			instance = this;
		}

		return instance;
	}
}

来源：https://stackoverflow.com/questions/31486384/how-to-create-a-singleton-service-in-aurelia