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<!DOCTYPE html> <html> <body> <p>There are two different ways to access an object property:</p> <p>You can use .property or ["property"].</p> <p id="demo"></p> <script> var person = { firstname:"John", lastname:"Doe", age:50, eyecolor:"blue" }; document.getElementById("demo").innerHTML = person["firstname"] + " is " + person["age"] + " years old."; </script> </body> </html>