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<body>
<h2>JavaScript Object Properties</h2>
<p>You can delete object properties with the delete keyword.</p>
<p id="demo"></p>
<script>
var person = {
firstname: "John",
lastname: "Doe",
age: 50,
eyecolor: "blue"
};
delete person.age;
document.getElementById("demo").innerHTML =
person.firstname + " is " + person.age + " years old.";
</script>
</body>
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