access object values in javascript code example

Example 1: javascript access property values list of objects

// Access all properties and values in a JS object:
let valuesArray = Object.entries(MyObject);
  
   for (let value of valuesArray) { 
       document.write(value + "<br>"); // value is the property,value pair
   } 
/* Result: propName,value
           propName,value
 		   ...

For clarity: */
let person = {
  name: "Piet",
  age: 42
};

Object.keys(person) // = ["name", "age"]
Object.values(person) // = ["Piet", 42]
Object.entries(person) // = [ ["name","Piet"], ["age",42] ]

Example 2: 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 3: objects javascript

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