<!DOCTYPE html>
<html>
<body>
<h2>JavaScript関数</h2>
<p>myObject.fullName() は John Doe を返します。</p>
<p id="demo"></p>
<script>
const myObject = {
firstName:"John",
lastName: "Doe",
fullName: function() {
return this.firstName + " " + this.lastName;
}
}
document.getElementById("demo").innerHTML = myObject.fullName();
</script>
</body>
</html>
