What's your Function?

Passing variables into a function

<script>
 function addNumbers(a,b){
 var c = a+b;
 return c;
 }
 document.write(addNumbers(3,9));
 </script>

Use a function to call another function

<script>
function executeFirst() {
document.write("Please don't kill me, I'm too young to die.<br>")
}
function executeSecond() {
document.write("I'm ready to die.")
}
function execute() {
executeFirst();
executeSecond();
}
execute();
</script>