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Result Size: 625 x 571
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<!DOCTYPE html>
<html>
<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>
<!-- Mirrored from www.w3schools.com/howto/tryit.asp?filename=tryhow_delete_property_object by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:38:50 GMT -->
</html>
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