js object attributes code example

Example 1: javascript list object properties

var person={"first_name":"Bill","last_name":"Jenner"}
//get the person object properties with:
var keys = Object.keys(person); //keys = ["first_name","last_name"]

Example 2: how to a property from a JavaScript object

delete myObject.regex;
// or,
delete myObject['regex'];
// or,
var prop = "regex";
delete myObject[prop];


/** Demo */
var myObject = {
    "ircEvent": "PRIVMSG",
    "method": "newURI",
    "regex": "^http://.*"
};
delete myObject.regex;

console.log(myObject);

Example 3: Add New Properties to a JavaScript Object

var myDog = {
  "name": "Happy Coder",
  "legs": 4,
  "tails": 1,
  "friends": ["freeCodeCamp Campers"]
};

myDog.bark = "woof";
// or
myDog["bark"] = "woof";

Example 4: make an object javascript

class ObjectLayout {
	constructor() {
    	this.firstName = "Larry"; //property
    }
  
  	sayHi() { // Method
    	return `Hello from ${this.firstName}`;
    }
}

const object = new ObjectLayout();
// object.firstName is Larry;
// object.sayHi() gives "Hello from Larry"

Example 5: how to create an object in javascript

const person = {
  name: 'Anthony',
  age: 32,
  city: 'Los Angeles',
  occupation: 'Software Developer',
  skills: ['React','JavaScript','HTML','CSS']
};

//Use Template Literal to also log a message to the console
const message = `Hi, I'm ${person.name}. I live in ${person.city}.`;
console.log(message);