es6 arrow functions

Question 1

What is the syntax for defining an arrow function?

Answer 1

let varname = () => code block;

Question 2

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

Answer 2

It doesnt need return statement

Question 3

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

Answer 3

this is defined by where the function is defined (in the lexical scope)