Javascript getters and setters - recursion issue

Question

Can someone please help me understand the significance of the \'_\' character in the setters and getters of javascript. For example I have the following code which works fi

Answer 1

It's naming convention used to identify private variables or properties. The _ has no sign particular significance to JS.

From Airbnb JavaScript style guide:

Use a leading underscore _ when naming private properties.

https://github.com/airbnb/javascript#22.4