1var obj = {
2  prop1: 5,
3  obj2: {
4    prop1: [3, 6, 3],
5    prop2: 74,
6    prop3: {
7      str: "Hello World"
8    }
9  }
10};
11
12console.log(obj.obj2.prop3.str); //output: "Hello World"

1person = {
2    'name':'john smith'
3    'age':41
4};
5
6console.log(person);
7//this will return [object Object]
8//use
9console.log(JSON.stringify(person));
10//instead

1let car = {
2  engineNumber: 1234
3  brand: 'BMW',
4  break: function (){}
5}

1// To make an object literal:
2const dog = {
3    name: "Rusty",
4    breed: "unknown",
5    isAlive: false,
6    age: 7
7}
8// All keys will be turned into strings!
9
10// To retrieve a value:
11dog.age; //7
12dog["age"]; //7
13
14//updating values
15dog.breed = "mutt";
16dog["age"] = 8;

1function Dog() {
2  this.name = "Bailey"; 
3  this.colour = "Golden"; 
4  this.breed = "Golden Retriever";
5  this.age = 8;
6}

1//initialized object
2var object = {
3  property1: "a", 
4  property2: "b",
5}
6
7//object initializer function
8function object(property1, property2)
9{
10	this.property1 = property1;
11  	this.property2 = property2;
12}
13
14//initializing using the initializer function
15var mouse = new object("ab", "cd");