Function Basics

Declare a function and call it to get a result.

function_basics.js

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

const who = ;
const message = greet(who);

console.log("message=" + message);

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

const who = ;
const message = greet(who);

console.log("message=" + message);

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

const who = ;
const message = greet(who);

console.log("message=" + message);

function-basics A function declaration names a reusable block of code. Calling it with an argument runs the body and returns a value.