How to make inner function to return inner variable in javascript

How to make inner function to return inner variable in javascript

Forgive me for asking this simple question.
I want to get the inner variable through method.In java, I can achieve it
as below code.
class MyClass{
String words = "hello";
MyClass(){
// constructor
}
String getWords(){
return this.words;
}
}
Then, I can get the words (inner variable) by calling the method getWords().
MyClass myClass = new MyClass(); // object instance
System.out.println(myClass.getWords()); // get the words
My question is, how can i achieve such thing in javascript.