每当我调用保存方法时调用保存方法

Question

I have a class like this:

class X extends Y {
  public save() {

  }
}

abstract class Y {
  public saving() {

  }
}

const x = new X;
x.save();

How can I make sure each call to save triggers saving before?

In PHP, we can use __call and check the method name. Is there any similar approach with Javascript?

Answer 1

First of all define you abstract class Y before extending it. An then you can use super keyword to access base class members. See the code below.

 abstract class Y { public saving() { console.log("Y Class Saving") } } class X extends Y { public save() { super.saving(); console.log("X Class Save") } } const x = new X(); x.save(); 

Can test the above code here on Playground

Hope it helps :)