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<html><body><h1>JavaScript Operators</h1><h2>The delete Operator</h2><p>The delete operator deletes a property from an object:</p><p id="demo"></p><script>const 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></html>