在对象文字的声明中继承上下文（此）？ 自我可以吗？

Question

Is it posisble to remove the self variable in this snippet:

class Foobar {
  constructor() {
    let self = this; // How do I remove self?
    let fizz = buzz.doSomething({
      aFunction: self.someFun 
    });
  }

  someFun() {
  }
}

One option could be to define an empty object and then assign the function with the key.

let options = {};
options[aFunction] = this.doSomething;
let fizz = buzz.doSomething(options);

If the options object becomes a list of 10 things wouldn't be better to have them all wrapped by a single pair of braces?

Am I overthinking it?

Answer 1

You can safely use this in your code snippet. this only changes it's meaning when you're invoking a function using the function(){} syntax. In your case you're just creating an object literal, where this is still the same as self .

constructor() {
    let fizz = buzz.doSomething({
       aFunction: this.someFun 
    });
}

This works perfectly fine. Even made a jsfiddle .

If you want to go into more depth check out this on the MDN.