SOURCE

function callSomeFunction(someFunction, someArgument){
  return someFunction(someArgument);
}
function add10(num){
  return num + 10;
}
var result1 = callSomeFunction(add10, 10);
console.log(result1);

function getGreeting(name){
  return "Hello, " + name;
}

var result2 = callSomeFunction(getGreeting, "tom")
console.log(result2);