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<!DOCTYPE html>
<html>
<body>
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<h2>JavaScript Object.defineProperty()</h2>
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<p>This example changes a property value.</p>
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<p id="demo"></p>
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<script>
// Create an object:
const person = {
  firstName: "John",
  lastName: "Doe",
  language: "EN" 
};
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// Change a property
Object.defineProperty(person, "language", {value:"NO"})
document.getElementById("demo").innerHTML = person.language;
</script>
​
</body>
</html>
​