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<!DOCTYPE html> <html> <body> <h1>JavaScript Object</h1> <h2>The defineProperty() Method</h2> <p>This example adds a new property to an object.</p> <p id="demo"></p> <script> // Create an Object: const person = { firstName: "John", lastName: "Doe", language: "EN" }; // Add a Property Object.defineProperty(person, "year", { value: "2008" }) // Display the Property document.getElementById("demo").innerHTML = person.year; </script> </body> <!-- /js/tryit.asp?filename=tryjs_object_defineproperty_1 Thu, 06 Feb 2025 19:15:31 GMT --> </html>
