var self = this?

Question

Using instance methods as callbacks for event handlers changes the scope of this from \"My instance\" to \"Whatever just called the callback\"

Answer 1

If you are doing ES2015 or doing type script and ES5 then you can use arrow functions in your code and you don't face that error and this refers to your desired scope in your instance.

this.name = 'test'
myObject.doSomething(data => {
  console.log(this.name)  // this should print out 'test'
});