Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<body>

<p>The value of <b>this</b>, in an object method, is the owner object.</p>

<p id="demo"></p>

<script>
var myObject = {
    firstName:"John",
    lastName: "Doe",
    fullName: function() {
        return this;
    }
}
document.getElementById("demo").innerHTML = myObject.fullName();
</script>

</body>
</html>