how to access object in javascript code example

Example 1: javascript object get property or default

// won't work if obj.property is falsey
let value = obj.property || "default";

Example 2: javascript object

var	person = {
	first_name : "Marty",
  	last_name : "Mcfly",
	born : 1968,
	died : 1933,
    lovers: ["Jennifer Parker","Baines McFly"]
};

Example 3: creating an object javascript

let obj = {
// fields
  name:"value",
  num: 123,
//methods
  foo: function(){}
  
}

Example 4: js obj

var obj = {my:"sql",  nice:[69, 420]};

obj.my //returns the string "sql"
obj.nice //returns the array [69, 420]

Example 5: js objects

// To make an object literal:
const dog = {
    name: "Rusty",
    breed: "unknown",
    isAlive: false,
    age: 7
}
// All keys will be turned into strings!

// To retrieve a value:
dog.age; //7
dog["age"]; //7

//updating values
dog.breed = "mutt";
dog["age"] = 8;

Example 6: objects javascript

function Dog() {
  this.name = "Bailey"; 
  this.colour = "Golden"; 
  this.breed = "Golden Retriever";
  this.age = 8;
}