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<html><body><h1>JavaScript Objects</h1><h2>Objects are Mutable</h2><p>Changes to a copy of an object will also change the original object:</p><p id="demo"></p><script>// Create an Objectconst person = { firstName: "John", lastName: "Doe", age:50, eyeColor: "blue"};// Try to create a Copyconst x = person;// This will change age in person !!!x.age = 10;document.getElementById("demo").innerHTML =person.firstName + " is " + person.age + " years old.";</script></body></html>