Lesson 9: Functions: Continued

Arrow Functions can get even shorter!

If there is only one statement and the statement return a value, the brackets and return keyword can be removed.

Example:

Greeting = () => "Hello World";

Arrow Function with a parameter

Rule -Parameters are all defined in the left of the arrow function in the parenthesis.

myAge =(age) => "My age is" + age;

Calling an arrow function with a parameter without parenthesis

myAge = age => "My age is" + age;

The most popular built in function is the constructor. What is a constructor?

• Returns the function that is created by the objects instances.

Example:

function meal (drink,chips,burger,toy){ 

this.myDrink = drink; 
this.myChips = chips; 
this.myBurger = burger ; 
this.myToy = toy; 
var myMeal = new meal("Fanta" , "Regular Chips" , "Hamburger" , "Hulk Toy");
var yourMeal = new meal("Coke" , "Small Chips" , "Chicken Burger" , "Spider man Toy");
}