How can i set encoded string to Class Variable?

[VishalChauha]

I have implemented code but when i try to return encoded string in external function. It says 'Undefine'.
i can got encoded string withing Callback method but i cannot use out of that scope.
Please guide.
Thanks

[dev1BD]

I got same problem

getencrptedData() {
       let encrypt = "";
       Des.encrypt("Devloper is a good developer", "ABCDEFGH", function (encrypted) {
           const data = encrypted;
           encrypt = data;
       }, function (error) {
           console.log("Encrption error: " + error);
       });
       console.log("Encrypt Data: " + encrypt); // I want encrypted string here.
   }

I created custom function to get encrypted string but Encrypt Data returns before callback function executed.

I need encrypted string out of scope and after call back executed.
Thank You