The in operator returns true if the specified property is in the specified object or its prototype chain. Also remember, property names are strings!
Read more here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/in
The in operator returns true if the specified property is in the specified object or its prototype chain. Also remember, property names are strings!
Read more here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/in