x
<html><body><h1>JavaScript Objects</h1><h2>The Object.defineProperties() Method</h2><p>This example adds a new property to an object.</p><p id="demo"></p><script>const person = { firstName: "John", lastName: "Doe"};Object.defineProperties(person, { language: {value: "en"}, year: {value: "Hello"}});// Display the propertiesdocument.getElementById("demo").innerHTML = person.language + " " + person.year;</script></body></html>