Return JavaScript value from a callback

[Maddo7]

I need to run some code on a website and once it finishes, I need to return the data from the callback:

   doSomething().then(function(token) {

        return token;

       });

The problem is that the "Custom JavaScript code" block finishes before the result is ready and nothing gets returned to the variable.
How can I solve this?

 

[VladZen]

I need to run some code on a website and once it finishes, I need to return the data from the callback:

   doSomething().then(function(token) {

        return token;

       });

The problem is that the "Custom JavaScript code" block finishes before the result is ready and nothing gets returned to the variable.
How can I solve this?

You should add some waiting function to your code probably.