script.js

/*
let myGreatName;
myGreatName = "Becky Jones";
document.write(myGreatName);

let price = 100;
price = price / 2;
document.write(price);

let age = 18;
if (age < 18) {
  document.write("選挙権はありません");
} else if (age >= 18 && age < 25) {
  document.write("投票に行けます");
} else {
  document.write("衆議院に立候補できます");
}

function greet(greetingType, myName) {
  document.write("Good " + greetingType + ", " + myName + "!");
}

greet("morning", "佐藤");

function calculateCost(monthlyBandwidth) {
  if (monthlyBandwidth < 5.0) {
    return monthlyBandwidth * 600;
  } else {
    return 3000;
  }
}

document.write(calculateCost(3.5));
*/

/*
let element = document.getElementById("greeting");
element.textContent = "Hello DOM";
element.style.backgroundColor = "red";
*/

function clicked() {
  document.write("Hello World");
}

let greetButton = document.getElementById("greet-button");
greetButton.onclick = clicked;