Many times you will write a function and expect a value to be returned - this is called a return value
to have your function return a value you must use the return keyword in the last line of the body of your function
You can store the returned value in a variable and use it for later
// declare a function called bark
// that *returns* a string respreseting 'woof woof'
function bark() {
return 'woof woof!';
}
// call the bark function and store result in a variable
var sound = bark();
// print out result to the console
console.log('a dog makes the following sound ' + sound);
return keyword, then no value will be returned// declare a function called meow
// that generates a string representing 'meow' but
// does not use the return keyword
function meow() {
'meow';
}
// call the meow function and store result in a variable
var sound = meow();
// print out result to the console
console.log('a cat makes the following sound ' + sound);