es6-arrow-functions

Question 1

What is the syntax for defining an arrow function?

Answer 1

let nameOfFunction = (parameters) => expression or {statement}

Question 2

When an arrow function’s body is left without curly braces, what changes in its functionality?

Answer 2

If the body contains a single expression, the omission of curly braces does not affect its functionality.
If the body contains a statement, you must surround it with curly braces.
If the body is a multi-line code block, you include the curly braces.

and

The body automatically returns the value if there are no curly braces.

Question 3

How is the value of ‘this’ determined within an arrow function?

Answer 3

The value of ‘this’ is determined within an arrow function by looking at its enclosing context as opposed to creating its own context like a function defined using the ‘function’ keyword.