Setting Default Parameters for Your Functions

In order to help us create more flexible functions, ES6 introduces default parameters for functions.

• Ex:

const increment = (number, value = 1) =>  number + value;

console.log(increment(5)); will display 6
console.log(increment(5, 2)); will display 7

As you can see in the example above, we added a default parameter so that it will add 1 to number if value is not specified.