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JavaScript Objects

There are two different ways to access an object property.

You can use person.property or person["property"].

// Create an object:
const person = {
  firstName: "John",
  lastName : "Doe",
  id     :  5566
};

// Display some data from the object:
document.getElementById("demo").innerHTML =
person["firstName"] + " " + person["lastName"];

JavaScript objects are containers for named values called properties.