<!DOCTYPE html>
<html>
<body>
<p>An object method is a function definition stored as a property value.</p>
<p>If you access it without (), it will return the function definition:</p>
<p id="demo"></p>
<script>
var person = {
firstName: "John",
lastName : "Doe",
id : 5566,
fullName : function() {
return this.firstName + " " + this.lastName;
}
};
document.getElementById("demo").innerHTML = person.fullName;
</script>
</body>
</html>