Write Your Own Command

So far you've used commands somebody else wrote. Now you write your own. A function bundles several lines under one name so you can reuse them forever.

function greet(name) { … }

1. 1Define it

   Write a function called greet that takes a name.

   function greet(name) {
     createAnimal(name)
     say(name, "Hi, I am " + name)
     jump(name)
   }

2. 2Call it

   Call greet with one animal.

3. 3Call it again

   Call it twice more with different animals — one definition, three results.