Example of Attributes in JavaScript

javascript.js

var o = {}; // Creates a new object

// Example of an object property added
// with defineProperty with a data property descriptor
Object.defineProperty(o, 'a', {
  value: 37, // attribute name/key is 'value', it's value is 37
  writable: true, // attribute name/key is 'writable', it's value is true
  enumerable: true, // attribute name/key is 'enumerable', it's value is true
  configurable: true, // attribute name/key is 'configurable', it's value is true
});