Function Declaration

Also called a function statement.
This always starts with the keyword "function".
This creates a variable called IsEven in the current scope that holds the function object.
You do not have to put a semicolon at the end.

function IsEven(num) { 
   return num % 2 === 0;
}
console.log(IsEven(2));


Named Function Decelaration - without Arguments

function doSomething() { 
   alert('my message');
}

doSomething();


Named Function Decelaration - with Arguments

This function takes 2 parameters
Often called the standard function declaration

function add(x, y) 
{
   var z = x + y;
   return z;
}

var sum = add(1,2)



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