//Objects are an extremely useful data structure that is used in JavaScript quite extensively. //They allow us to group properties and methods operating on these properties together, as well as the ability to inherit useful common methods. //You can define objects in several ways, but let us introduce only a couple of these for now. //Object literals: //This will be an empty object... let obj1 = {}; //This will be an object with one propery... let obj2 = {num1: 40}; //This will be an object with two properties. //Note the syntax. We use opening and closing curly brackets to define the obejct. We use key followed by a colon followed by a value to define a property (key-value pair). Properties are separated from one another by a comma. let obj3 = {num1: 40, num2: 50 }; //Let us show the three objects in the console... console.log(obj1, obj2, obj3);

//Another way to create an object is to use the Object constructor (Object) and the new keyword. Don't worry if this doesn't make sense for now. let obj4 = new Object(); console.log(obj4); //We can now add properties to obj4 using the dot notation... obj4.num1 = 50; obj4.num2 = 60; //Let us show our object again in the console... console.log(obj4);